Home / 21,187.73-29,240.46-12,235.61

Finding the Fourth Proportional to 21,187.73, 29,240.46 and 12,235.61

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Solution

The fourth proportional to 21,187.73, 29,240.46 and 12,235.61 is: 16,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.73 : 29,240.46 = 12,235.61 : x
  2. Step 2: Convert to fraction form
    21,187.73/29,240.46 = 12,235.61/x
  3. Step 3: Cross multiply
    21,187.73x = 29,240.46 × 12,235.61
  4. Step 4: Simplify right side
    21,187.73x = 357,774,864.78
  5. Step 5: Solve for x
    x = 357,774,864.78/21,187.73
  6. Step 6: Final answer
    x = 16,885.95

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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.