Home / 15,330.72-21,155.76-8,524.48

Finding the Fourth Proportional to 15,330.72, 21,155.76 and 8,524.48

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Solution

The fourth proportional to 15,330.72, 21,155.76 and 8,524.48 is: 11,763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.72 : 21,155.76 = 8,524.48 : x
  2. Step 2: Convert to fraction form
    15,330.72/21,155.76 = 8,524.48/x
  3. Step 3: Cross multiply
    15,330.72x = 21,155.76 × 8,524.48
  4. Step 4: Simplify right side
    15,330.72x = 180,341,853.00
  5. Step 5: Solve for x
    x = 180,341,853.00/15,330.72
  6. Step 6: Final answer
    x = 11,763.43

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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.