Home / 15,321.38-21,143.52-8,607.01

Finding the Fourth Proportional to 15,321.38, 21,143.52 and 8,607.01

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Solution

The fourth proportional to 15,321.38, 21,143.52 and 8,607.01 is: 11,877.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.38 : 21,143.52 = 8,607.01 : x
  2. Step 2: Convert to fraction form
    15,321.38/21,143.52 = 8,607.01/x
  3. Step 3: Cross multiply
    15,321.38x = 21,143.52 × 8,607.01
  4. Step 4: Simplify right side
    15,321.38x = 181,982,488.08
  5. Step 5: Solve for x
    x = 181,982,488.08/15,321.38
  6. Step 6: Final answer
    x = 11,877.68

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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.