Home / 22,390.40-30,896.16-15,327.20

Finding the Fourth Proportional to 22,390.40, 30,896.16 and 15,327.20

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Solution

The fourth proportional to 22,390.40, 30,896.16 and 15,327.20 is: 21,149.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.40 : 30,896.16 = 15,327.20 : x
  2. Step 2: Convert to fraction form
    22,390.40/30,896.16 = 15,327.20/x
  3. Step 3: Cross multiply
    22,390.40x = 30,896.16 × 15,327.20
  4. Step 4: Simplify right side
    22,390.40x = 473,551,623.55
  5. Step 5: Solve for x
    x = 473,551,623.55/22,390.40
  6. Step 6: Final answer
    x = 21,149.76

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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.