Home / 21,248.78-31,873.19-5,666.40

Finding the Fourth Proportional to 21,248.78, 31,873.19 and 5,666.40

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Solution

The fourth proportional to 21,248.78, 31,873.19 and 5,666.40 is: 8,499.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.78 : 31,873.19 = 5,666.40 : x
  2. Step 2: Convert to fraction form
    21,248.78/31,873.19 = 5,666.40/x
  3. Step 3: Cross multiply
    21,248.78x = 31,873.19 × 5,666.40
  4. Step 4: Simplify right side
    21,248.78x = 180,606,215.48
  5. Step 5: Solve for x
    x = 180,606,215.48/21,248.78
  6. Step 6: Final answer
    x = 8,499.61

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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.