Home / 10,917.52-15,053.34-9,129.04

Finding the Fourth Proportional to 10,917.52, 15,053.34 and 9,129.04

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Solution

The fourth proportional to 10,917.52, 15,053.34 and 9,129.04 is: 12,587.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.52 : 15,053.34 = 9,129.04 : x
  2. Step 2: Convert to fraction form
    10,917.52/15,053.34 = 9,129.04/x
  3. Step 3: Cross multiply
    10,917.52x = 15,053.34 × 9,129.04
  4. Step 4: Simplify right side
    10,917.52x = 137,422,542.99
  5. Step 5: Solve for x
    x = 137,422,542.99/10,917.52
  6. Step 6: Final answer
    x = 12,587.34

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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.