Home / 21,038.48-31,557.72-13,227.92

Finding the Fourth Proportional to 21,038.48, 31,557.72 and 13,227.92

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Solution

The fourth proportional to 21,038.48, 31,557.72 and 13,227.92 is: 19,841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.48 : 31,557.72 = 13,227.92 : x
  2. Step 2: Convert to fraction form
    21,038.48/31,557.72 = 13,227.92/x
  3. Step 3: Cross multiply
    21,038.48x = 31,557.72 × 13,227.92
  4. Step 4: Simplify right side
    21,038.48x = 417,442,995.54
  5. Step 5: Solve for x
    x = 417,442,995.54/21,038.48
  6. Step 6: Final answer
    x = 19,841.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.