Home / 21,517.32-29,693.88-12,085.92

Finding the Fourth Proportional to 21,517.32, 29,693.88 and 12,085.92

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Solution

The fourth proportional to 21,517.32, 29,693.88 and 12,085.92 is: 16,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.32 : 29,693.88 = 12,085.92 : x
  2. Step 2: Convert to fraction form
    21,517.32/29,693.88 = 12,085.92/x
  3. Step 3: Cross multiply
    21,517.32x = 29,693.88 × 12,085.92
  4. Step 4: Simplify right side
    21,517.32x = 358,877,858.17
  5. Step 5: Solve for x
    x = 358,877,858.17/21,517.32
  6. Step 6: Final answer
    x = 16,678.56

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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.