Home / 21,311.88-29,399.60-14,248.68

Finding the Fourth Proportional to 21,311.88, 29,399.60 and 14,248.68

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Solution

The fourth proportional to 21,311.88, 29,399.60 and 14,248.68 is: 19,655.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.88 : 29,399.60 = 14,248.68 : x
  2. Step 2: Convert to fraction form
    21,311.88/29,399.60 = 14,248.68/x
  3. Step 3: Cross multiply
    21,311.88x = 29,399.60 × 14,248.68
  4. Step 4: Simplify right side
    21,311.88x = 418,905,492.53
  5. Step 5: Solve for x
    x = 418,905,492.53/21,311.88
  6. Step 6: Final answer
    x = 19,655.96

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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.