Home / 28,318.38-42,477.70-7,541.88

Finding the Fourth Proportional to 28,318.38, 42,477.70 and 7,541.88

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Solution

The fourth proportional to 28,318.38, 42,477.70 and 7,541.88 is: 11,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.38 : 42,477.70 = 7,541.88 : x
  2. Step 2: Convert to fraction form
    28,318.38/42,477.70 = 7,541.88/x
  3. Step 3: Cross multiply
    28,318.38x = 42,477.70 × 7,541.88
  4. Step 4: Simplify right side
    28,318.38x = 320,361,503.69
  5. Step 5: Solve for x
    x = 320,361,503.69/28,318.38
  6. Step 6: Final answer
    x = 11,312.85

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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.