Home / 21,159.32-31,676.66-15,637.28

Finding the Fourth Proportional to 21,159.32, 31,676.66 and 15,637.28

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Solution

The fourth proportional to 21,159.32, 31,676.66 and 15,637.28 is: 23,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.32 : 31,676.66 = 15,637.28 : x
  2. Step 2: Convert to fraction form
    21,159.32/31,676.66 = 15,637.28/x
  3. Step 3: Cross multiply
    21,159.32x = 31,676.66 × 15,637.28
  4. Step 4: Simplify right side
    21,159.32x = 495,336,565.32
  5. Step 5: Solve for x
    x = 495,336,565.32/21,159.32
  6. Step 6: Final answer
    x = 23,409.86

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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.