Home / 28,104.32-42,127.20-11,457.12

Finding the Fourth Proportional to 28,104.32, 42,127.20 and 11,457.12

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Solution

The fourth proportional to 28,104.32, 42,127.20 and 11,457.12 is: 17,173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.32 : 42,127.20 = 11,457.12 : x
  2. Step 2: Convert to fraction form
    28,104.32/42,127.20 = 11,457.12/x
  3. Step 3: Cross multiply
    28,104.32x = 42,127.20 × 11,457.12
  4. Step 4: Simplify right side
    28,104.32x = 482,656,385.66
  5. Step 5: Solve for x
    x = 482,656,385.66/28,104.32
  6. Step 6: Final answer
    x = 17,173.74

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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.