Home / 21,340.16-29,452.08-12,385.74

Finding the Fourth Proportional to 21,340.16, 29,452.08 and 12,385.74

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Solution

The fourth proportional to 21,340.16, 29,452.08 and 12,385.74 is: 17,093.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.16 : 29,452.08 = 12,385.74 : x
  2. Step 2: Convert to fraction form
    21,340.16/29,452.08 = 12,385.74/x
  3. Step 3: Cross multiply
    21,340.16x = 29,452.08 × 12,385.74
  4. Step 4: Simplify right side
    21,340.16x = 364,785,805.34
  5. Step 5: Solve for x
    x = 364,785,805.34/21,340.16
  6. Step 6: Final answer
    x = 17,093.86

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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.