Home / 21,154.70-29,159.60-16,671.02

Finding the Fourth Proportional to 21,154.70, 29,159.60 and 16,671.02

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Solution

The fourth proportional to 21,154.70, 29,159.60 and 16,671.02 is: 22,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.70 : 29,159.60 = 16,671.02 : x
  2. Step 2: Convert to fraction form
    21,154.70/29,159.60 = 16,671.02/x
  3. Step 3: Cross multiply
    21,154.70x = 29,159.60 × 16,671.02
  4. Step 4: Simplify right side
    21,154.70x = 486,120,274.79
  5. Step 5: Solve for x
    x = 486,120,274.79/21,154.70
  6. Step 6: Final answer
    x = 22,979.30

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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.