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Finding the Fourth Proportional to 13,402.95, 18,495.08 and 7,352.19

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Solution

The fourth proportional to 13,402.95, 18,495.08 and 7,352.19 is: 10,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.95 : 18,495.08 = 7,352.19 : x
  2. Step 2: Convert to fraction form
    13,402.95/18,495.08 = 7,352.19/x
  3. Step 3: Cross multiply
    13,402.95x = 18,495.08 × 7,352.19
  4. Step 4: Simplify right side
    13,402.95x = 135,979,305.46
  5. Step 5: Solve for x
    x = 135,979,305.46/13,402.95
  6. Step 6: Final answer
    x = 10,145.48

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Half scale
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Double scale
Find fourth proportional to 13,403.95, 18,496.45 and 7,353.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.