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Finding the Fourth Proportional to 17,870.85, 24,660.93 and 9,912.90

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Solution

The fourth proportional to 17,870.85, 24,660.93 and 9,912.90 is: 13,679.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,870.85 : 24,660.93 = 9,912.90 : x
  2. Step 2: Convert to fraction form
    17,870.85/24,660.93 = 9,912.90/x
  3. Step 3: Cross multiply
    17,870.85x = 24,660.93 × 9,912.90
  4. Step 4: Simplify right side
    17,870.85x = 244,461,333.00
  5. Step 5: Solve for x
    x = 244,461,333.00/17,870.85
  6. Step 6: Final answer
    x = 13,679.33

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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.