Home / 21,031.64-29,023.60-11,471.52

Finding the Fourth Proportional to 21,031.64, 29,023.60 and 11,471.52

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Solution

The fourth proportional to 21,031.64, 29,023.60 and 11,471.52 is: 15,830.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.64 : 29,023.60 = 11,471.52 : x
  2. Step 2: Convert to fraction form
    21,031.64/29,023.60 = 11,471.52/x
  3. Step 3: Cross multiply
    21,031.64x = 29,023.60 × 11,471.52
  4. Step 4: Simplify right side
    21,031.64x = 332,944,807.87
  5. Step 5: Solve for x
    x = 332,944,807.87/21,031.64
  6. Step 6: Final answer
    x = 15,830.66

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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.