Home / 28,358.40-42,539.55-9,630.79

Finding the Fourth Proportional to 28,358.40, 42,539.55 and 9,630.79

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Solution

The fourth proportional to 28,358.40, 42,539.55 and 9,630.79 is: 14,446.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.40 : 42,539.55 = 9,630.79 : x
  2. Step 2: Convert to fraction form
    28,358.40/42,539.55 = 9,630.79/x
  3. Step 3: Cross multiply
    28,358.40x = 42,539.55 × 9,630.79
  4. Step 4: Simplify right side
    28,358.40x = 409,689,472.74
  5. Step 5: Solve for x
    x = 409,689,472.74/28,358.40
  6. Step 6: Final answer
    x = 14,446.85

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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.