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Finding the Fourth Proportional to 28,130.50, 38,824.95 and 16,952.50

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Solution

The fourth proportional to 28,130.50, 38,824.95 and 16,952.50 is: 23,397.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.50 : 38,824.95 = 16,952.50 : x
  2. Step 2: Convert to fraction form
    28,130.50/38,824.95 = 16,952.50/x
  3. Step 3: Cross multiply
    28,130.50x = 38,824.95 × 16,952.50
  4. Step 4: Simplify right side
    28,130.50x = 658,179,964.88
  5. Step 5: Solve for x
    x = 658,179,964.88/28,130.50
  6. Step 6: Final answer
    x = 23,397.38

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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.