Home / 11,124.28-15,341.10-7,539.76

Finding the Fourth Proportional to 11,124.28, 15,341.10 and 7,539.76

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Solution

The fourth proportional to 11,124.28, 15,341.10 and 7,539.76 is: 10,397.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.28 : 15,341.10 = 7,539.76 : x
  2. Step 2: Convert to fraction form
    11,124.28/15,341.10 = 7,539.76/x
  3. Step 3: Cross multiply
    11,124.28x = 15,341.10 × 7,539.76
  4. Step 4: Simplify right side
    11,124.28x = 115,668,212.14
  5. Step 5: Solve for x
    x = 115,668,212.14/11,124.28
  6. Step 6: Final answer
    x = 10,397.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.