Home / 15,500.36-21,390.90-9,127.28

Finding the Fourth Proportional to 15,500.36, 21,390.90 and 9,127.28

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Solution

The fourth proportional to 15,500.36, 21,390.90 and 9,127.28 is: 12,595.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.36 : 21,390.90 = 9,127.28 : x
  2. Step 2: Convert to fraction form
    15,500.36/21,390.90 = 9,127.28/x
  3. Step 3: Cross multiply
    15,500.36x = 21,390.90 × 9,127.28
  4. Step 4: Simplify right side
    15,500.36x = 195,240,733.75
  5. Step 5: Solve for x
    x = 195,240,733.75/15,500.36
  6. Step 6: Final answer
    x = 12,595.88

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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.