Home / 18,689.10-28,035.69-9,331.46

Finding the Fourth Proportional to 18,689.10, 28,035.69 and 9,331.46

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Solution

The fourth proportional to 18,689.10, 28,035.69 and 9,331.46 is: 13,998.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.10 : 28,035.69 = 9,331.46 : x
  2. Step 2: Convert to fraction form
    18,689.10/28,035.69 = 9,331.46/x
  3. Step 3: Cross multiply
    18,689.10x = 28,035.69 × 9,331.46
  4. Step 4: Simplify right side
    18,689.10x = 261,613,919.81
  5. Step 5: Solve for x
    x = 261,613,919.81/18,689.10
  6. Step 6: Final answer
    x = 13,998.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.