Home / 13,353.57-18,427.41-7,385.13

Finding the Fourth Proportional to 13,353.57, 18,427.41 and 7,385.13

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Solution

The fourth proportional to 13,353.57, 18,427.41 and 7,385.13 is: 10,191.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.57 : 18,427.41 = 7,385.13 : x
  2. Step 2: Convert to fraction form
    13,353.57/18,427.41 = 7,385.13/x
  3. Step 3: Cross multiply
    13,353.57x = 18,427.41 × 7,385.13
  4. Step 4: Simplify right side
    13,353.57x = 136,088,818.41
  5. Step 5: Solve for x
    x = 136,088,818.41/13,353.57
  6. Step 6: Final answer
    x = 10,191.19

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Double scale
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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.