Home / 15,323.55-21,144.19-8,607.89

Finding the Fourth Proportional to 15,323.55, 21,144.19 and 8,607.89

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Solution

The fourth proportional to 15,323.55, 21,144.19 and 8,607.89 is: 11,877.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.55 : 21,144.19 = 8,607.89 : x
  2. Step 2: Convert to fraction form
    15,323.55/21,144.19 = 8,607.89/x
  3. Step 3: Cross multiply
    15,323.55x = 21,144.19 × 8,607.89
  4. Step 4: Simplify right side
    15,323.55x = 182,006,861.66
  5. Step 5: Solve for x
    x = 182,006,861.66/15,323.55
  6. Step 6: Final answer
    x = 11,877.59

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1.5x scale

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.