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Finding the Fourth Proportional to 16,420.40, 24,580.92 and 10,581.20

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Solution

The fourth proportional to 16,420.40, 24,580.92 and 10,581.20 is: 15,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.40 : 24,580.92 = 10,581.20 : x
  2. Step 2: Convert to fraction form
    16,420.40/24,580.92 = 10,581.20/x
  3. Step 3: Cross multiply
    16,420.40x = 24,580.92 × 10,581.20
  4. Step 4: Simplify right side
    16,420.40x = 260,095,630.70
  5. Step 5: Solve for x
    x = 260,095,630.70/16,420.40
  6. Step 6: Final answer
    x = 15,839.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.