Home / 15,126.82-20,869.46-9,156.30

Finding the Fourth Proportional to 15,126.82, 20,869.46 and 9,156.30

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Solution

The fourth proportional to 15,126.82, 20,869.46 and 9,156.30 is: 12,632.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.82 : 20,869.46 = 9,156.30 : x
  2. Step 2: Convert to fraction form
    15,126.82/20,869.46 = 9,156.30/x
  3. Step 3: Cross multiply
    15,126.82x = 20,869.46 × 9,156.30
  4. Step 4: Simplify right side
    15,126.82x = 191,087,036.60
  5. Step 5: Solve for x
    x = 191,087,036.60/15,126.82
  6. Step 6: Final answer
    x = 12,632.33

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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.