Home / 20,931.09-28,863.18-14,564.90

Finding the Fourth Proportional to 20,931.09, 28,863.18 and 14,564.90

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Solution

The fourth proportional to 20,931.09, 28,863.18 and 14,564.90 is: 20,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,931.09 : 28,863.18 = 14,564.90 : x
  2. Step 2: Convert to fraction form
    20,931.09/28,863.18 = 14,564.90/x
  3. Step 3: Cross multiply
    20,931.09x = 28,863.18 × 14,564.90
  4. Step 4: Simplify right side
    20,931.09x = 420,389,186.07
  5. Step 5: Solve for x
    x = 420,389,186.07/20,931.09
  6. Step 6: Final answer
    x = 20,084.44

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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.