Home / 28,003.10-38,635.98-16,663.50

Finding the Fourth Proportional to 28,003.10, 38,635.98 and 16,663.50

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Solution

The fourth proportional to 28,003.10, 38,635.98 and 16,663.50 is: 22,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.10 : 38,635.98 = 16,663.50 : x
  2. Step 2: Convert to fraction form
    28,003.10/38,635.98 = 16,663.50/x
  3. Step 3: Cross multiply
    28,003.10x = 38,635.98 × 16,663.50
  4. Step 4: Simplify right side
    28,003.10x = 643,810,652.73
  5. Step 5: Solve for x
    x = 643,810,652.73/28,003.10
  6. Step 6: Final answer
    x = 22,990.70

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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.