Home / 21,505.07-29,715.50-16,824.89

Finding the Fourth Proportional to 21,505.07, 29,715.50 and 16,824.89

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Solution

The fourth proportional to 21,505.07, 29,715.50 and 16,824.89 is: 23,248.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,505.07 : 29,715.50 = 16,824.89 : x
  2. Step 2: Convert to fraction form
    21,505.07/29,715.50 = 16,824.89/x
  3. Step 3: Cross multiply
    21,505.07x = 29,715.50 × 16,824.89
  4. Step 4: Simplify right side
    21,505.07x = 499,960,135.15
  5. Step 5: Solve for x
    x = 499,960,135.15/21,505.07
  6. Step 6: Final answer
    x = 23,248.47

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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.