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Finding the Fourth Proportional to 14,061.89, 20,968.80 and 13,935.30

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Solution

The fourth proportional to 14,061.89, 20,968.80 and 13,935.30 is: 20,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,061.89 : 20,968.80 = 13,935.30 : x
  2. Step 2: Convert to fraction form
    14,061.89/20,968.80 = 13,935.30/x
  3. Step 3: Cross multiply
    14,061.89x = 20,968.80 × 13,935.30
  4. Step 4: Simplify right side
    14,061.89x = 292,206,518.64
  5. Step 5: Solve for x
    x = 292,206,518.64/14,061.89
  6. Step 6: Final answer
    x = 20,780.04

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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.