Home / 21,342.16-29,454.84-12,387.74

Finding the Fourth Proportional to 21,342.16, 29,454.84 and 12,387.74

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Solution

The fourth proportional to 21,342.16, 29,454.84 and 12,387.74 is: 17,096.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.16 : 29,454.84 = 12,387.74 : x
  2. Step 2: Convert to fraction form
    21,342.16/29,454.84 = 12,387.74/x
  3. Step 3: Cross multiply
    21,342.16x = 29,454.84 × 12,387.74
  4. Step 4: Simplify right side
    21,342.16x = 364,878,899.66
  5. Step 5: Solve for x
    x = 364,878,899.66/21,342.16
  6. Step 6: Final answer
    x = 17,096.62

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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.