Home / 28,452.16-42,678.40-10,917.76

Finding the Fourth Proportional to 28,452.16, 42,678.40 and 10,917.76

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Solution

The fourth proportional to 28,452.16, 42,678.40 and 10,917.76 is: 16,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.16 : 42,678.40 = 10,917.76 : x
  2. Step 2: Convert to fraction form
    28,452.16/42,678.40 = 10,917.76/x
  3. Step 3: Cross multiply
    28,452.16x = 42,678.40 × 10,917.76
  4. Step 4: Simplify right side
    28,452.16x = 465,952,528.38
  5. Step 5: Solve for x
    x = 465,952,528.38/28,452.16
  6. Step 6: Final answer
    x = 16,376.70

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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.