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Finding the Fourth Proportional to 14,549.50, 20,078.31 and 7,925.50

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Solution

The fourth proportional to 14,549.50, 20,078.31 and 7,925.50 is: 10,937.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,549.50 : 20,078.31 = 7,925.50 : x
  2. Step 2: Convert to fraction form
    14,549.50/20,078.31 = 7,925.50/x
  3. Step 3: Cross multiply
    14,549.50x = 20,078.31 × 7,925.50
  4. Step 4: Simplify right side
    14,549.50x = 159,130,645.91
  5. Step 5: Solve for x
    x = 159,130,645.91/14,549.50
  6. Step 6: Final answer
    x = 10,937.19

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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.