Home / 21,491.61-29,658.60-12,062.40

Finding the Fourth Proportional to 21,491.61, 29,658.60 and 12,062.40

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Solution

The fourth proportional to 21,491.61, 29,658.60 and 12,062.40 is: 16,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.61 : 29,658.60 = 12,062.40 : x
  2. Step 2: Convert to fraction form
    21,491.61/29,658.60 = 12,062.40/x
  3. Step 3: Cross multiply
    21,491.61x = 29,658.60 × 12,062.40
  4. Step 4: Simplify right side
    21,491.61x = 357,753,896.64
  5. Step 5: Solve for x
    x = 357,753,896.64/21,491.61
  6. Step 6: Final answer
    x = 16,646.21

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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.