Home / 28,331.28-42,459.84-11,672.28

Finding the Fourth Proportional to 28,331.28, 42,459.84 and 11,672.28

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Solution

The fourth proportional to 28,331.28, 42,459.84 and 11,672.28 is: 17,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.28 : 42,459.84 = 11,672.28 : x
  2. Step 2: Convert to fraction form
    28,331.28/42,459.84 = 11,672.28/x
  3. Step 3: Cross multiply
    28,331.28x = 42,459.84 × 11,672.28
  4. Step 4: Simplify right side
    28,331.28x = 495,603,141.24
  5. Step 5: Solve for x
    x = 495,603,141.24/28,331.28
  6. Step 6: Final answer
    x = 17,493.14

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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.