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Finding the Fourth Proportional to 10,352.70, 15,529.05 and 9,639.90

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Solution

The fourth proportional to 10,352.70, 15,529.05 and 9,639.90 is: 14,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,352.70 : 15,529.05 = 9,639.90 : x
  2. Step 2: Convert to fraction form
    10,352.70/15,529.05 = 9,639.90/x
  3. Step 3: Cross multiply
    10,352.70x = 15,529.05 × 9,639.90
  4. Step 4: Simplify right side
    10,352.70x = 149,698,489.10
  5. Step 5: Solve for x
    x = 149,698,489.10/10,352.70
  6. Step 6: Final answer
    x = 14,459.85

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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.