Home / 20,931.08-31,389.90-9,244.04

Finding the Fourth Proportional to 20,931.08, 31,389.90 and 9,244.04

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Solution

The fourth proportional to 20,931.08, 31,389.90 and 9,244.04 is: 13,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,931.08 : 31,389.90 = 9,244.04 : x
  2. Step 2: Convert to fraction form
    20,931.08/31,389.90 = 9,244.04/x
  3. Step 3: Cross multiply
    20,931.08x = 31,389.90 × 9,244.04
  4. Step 4: Simplify right side
    20,931.08x = 290,169,491.20
  5. Step 5: Solve for x
    x = 290,169,491.20/20,931.08
  6. Step 6: Final answer
    x = 13,863.09

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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.