Home / 21,617.04-29,826.98-13,123.64

Finding the Fourth Proportional to 21,617.04, 29,826.98 and 13,123.64

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Solution

The fourth proportional to 21,617.04, 29,826.98 and 13,123.64 is: 18,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.04 : 29,826.98 = 13,123.64 : x
  2. Step 2: Convert to fraction form
    21,617.04/29,826.98 = 13,123.64/x
  3. Step 3: Cross multiply
    21,617.04x = 29,826.98 × 13,123.64
  4. Step 4: Simplify right side
    21,617.04x = 391,438,512.01
  5. Step 5: Solve for x
    x = 391,438,512.01/21,617.04
  6. Step 6: Final answer
    x = 18,107.87

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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.