Home / 18,435.83-25,421.36-12,457.13

Finding the Fourth Proportional to 18,435.83, 25,421.36 and 12,457.13

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Solution

The fourth proportional to 18,435.83, 25,421.36 and 12,457.13 is: 17,177.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.83 : 25,421.36 = 12,457.13 : x
  2. Step 2: Convert to fraction form
    18,435.83/25,421.36 = 12,457.13/x
  3. Step 3: Cross multiply
    18,435.83x = 25,421.36 × 12,457.13
  4. Step 4: Simplify right side
    18,435.83x = 316,676,996.90
  5. Step 5: Solve for x
    x = 316,676,996.90/18,435.83
  6. Step 6: Final answer
    x = 17,177.26

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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.