Home / 13,331.95-18,400.45-7,666.25

Finding the Fourth Proportional to 13,331.95, 18,400.45 and 7,666.25

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Solution

The fourth proportional to 13,331.95, 18,400.45 and 7,666.25 is: 10,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.95 : 18,400.45 = 7,666.25 : x
  2. Step 2: Convert to fraction form
    13,331.95/18,400.45 = 7,666.25/x
  3. Step 3: Cross multiply
    13,331.95x = 18,400.45 × 7,666.25
  4. Step 4: Simplify right side
    13,331.95x = 141,062,457.48
  5. Step 5: Solve for x
    x = 141,062,457.48/13,331.95
  6. Step 6: Final answer
    x = 10,580.79

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Half scale
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Double scale
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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.