Home / 20,874.81-31,197.61-15,264.30

Finding the Fourth Proportional to 20,874.81, 31,197.61 and 15,264.30

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Solution

The fourth proportional to 20,874.81, 31,197.61 and 15,264.30 is: 22,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.81 : 31,197.61 = 15,264.30 : x
  2. Step 2: Convert to fraction form
    20,874.81/31,197.61 = 15,264.30/x
  3. Step 3: Cross multiply
    20,874.81x = 31,197.61 × 15,264.30
  4. Step 4: Simplify right side
    20,874.81x = 476,209,640.16
  5. Step 5: Solve for x
    x = 476,209,640.16/20,874.81
  6. Step 6: Final answer
    x = 22,812.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.