Home / 21,160.46-29,134.68-16,108.40

Finding the Fourth Proportional to 21,160.46, 29,134.68 and 16,108.40

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Solution

The fourth proportional to 21,160.46, 29,134.68 and 16,108.40 is: 22,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.46 : 29,134.68 = 16,108.40 : x
  2. Step 2: Convert to fraction form
    21,160.46/29,134.68 = 16,108.40/x
  3. Step 3: Cross multiply
    21,160.46x = 29,134.68 × 16,108.40
  4. Step 4: Simplify right side
    21,160.46x = 469,313,079.31
  5. Step 5: Solve for x
    x = 469,313,079.31/21,160.46
  6. Step 6: Final answer
    x = 22,178.77

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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.