Home / 28,617.38-42,918.32-11,974

Finding the Fourth Proportional to 28,617.38, 42,918.32 and 11,974

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Solution

The fourth proportional to 28,617.38, 42,918.32 and 11,974 is: 17,957.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.38 : 42,918.32 = 11,974 : x
  2. Step 2: Convert to fraction form
    28,617.38/42,918.32 = 11,974/x
  3. Step 3: Cross multiply
    28,617.38x = 42,918.32 × 11,974
  4. Step 4: Simplify right side
    28,617.38x = 513,903,963.68
  5. Step 5: Solve for x
    x = 513,903,963.68/28,617.38
  6. Step 6: Final answer
    x = 17,957.76

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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.