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Finding the Fourth Proportional to 16,984.01, 25,361.65 and 13,870.20

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Solution

The fourth proportional to 16,984.01, 25,361.65 and 13,870.20 is: 20,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,984.01 : 25,361.65 = 13,870.20 : x
  2. Step 2: Convert to fraction form
    16,984.01/25,361.65 = 13,870.20/x
  3. Step 3: Cross multiply
    16,984.01x = 25,361.65 × 13,870.20
  4. Step 4: Simplify right side
    16,984.01x = 351,771,127.61
  5. Step 5: Solve for x
    x = 351,771,127.61/16,984.01
  6. Step 6: Final answer
    x = 20,711.90

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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.