Home / 21,118.89-29,155.65-14,414.52

Finding the Fourth Proportional to 21,118.89, 29,155.65 and 14,414.52

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Solution

The fourth proportional to 21,118.89, 29,155.65 and 14,414.52 is: 19,899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.89 : 29,155.65 = 14,414.52 : x
  2. Step 2: Convert to fraction form
    21,118.89/29,155.65 = 14,414.52/x
  3. Step 3: Cross multiply
    21,118.89x = 29,155.65 × 14,414.52
  4. Step 4: Simplify right side
    21,118.89x = 420,264,700.04
  5. Step 5: Solve for x
    x = 420,264,700.04/21,118.89
  6. Step 6: Final answer
    x = 19,899.94

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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.