Home / 21,155.56-31,726.04-8,672.04

Finding the Fourth Proportional to 21,155.56, 31,726.04 and 8,672.04

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Solution

The fourth proportional to 21,155.56, 31,726.04 and 8,672.04 is: 13,005.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.56 : 31,726.04 = 8,672.04 : x
  2. Step 2: Convert to fraction form
    21,155.56/31,726.04 = 8,672.04/x
  3. Step 3: Cross multiply
    21,155.56x = 31,726.04 × 8,672.04
  4. Step 4: Simplify right side
    21,155.56x = 275,129,444.56
  5. Step 5: Solve for x
    x = 275,129,444.56/21,155.56
  6. Step 6: Final answer
    x = 13,005.07

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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.