Home / 18,772.80-25,875.36-13,459.20

Finding the Fourth Proportional to 18,772.80, 25,875.36 and 13,459.20

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Solution

The fourth proportional to 18,772.80, 25,875.36 and 13,459.20 is: 18,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.80 : 25,875.36 = 13,459.20 : x
  2. Step 2: Convert to fraction form
    18,772.80/25,875.36 = 13,459.20/x
  3. Step 3: Cross multiply
    18,772.80x = 25,875.36 × 13,459.20
  4. Step 4: Simplify right side
    18,772.80x = 348,261,645.31
  5. Step 5: Solve for x
    x = 348,261,645.31/18,772.80
  6. Step 6: Final answer
    x = 18,551.40

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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.