Home / 21,567.14-29,758.19-12,612.90

Finding the Fourth Proportional to 21,567.14, 29,758.19 and 12,612.90

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Solution

The fourth proportional to 21,567.14, 29,758.19 and 12,612.90 is: 17,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,567.14 : 29,758.19 = 12,612.90 : x
  2. Step 2: Convert to fraction form
    21,567.14/29,758.19 = 12,612.90/x
  3. Step 3: Cross multiply
    21,567.14x = 29,758.19 × 12,612.90
  4. Step 4: Simplify right side
    21,567.14x = 375,337,011.59
  5. Step 5: Solve for x
    x = 375,337,011.59/21,567.14
  6. Step 6: Final answer
    x = 17,403.19

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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.