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Finding the Fourth Proportional to 28,264.80, 39,009.80 and 16,327.20

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Solution

The fourth proportional to 28,264.80, 39,009.80 and 16,327.20 is: 22,534.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.80 : 39,009.80 = 16,327.20 : x
  2. Step 2: Convert to fraction form
    28,264.80/39,009.80 = 16,327.20/x
  3. Step 3: Cross multiply
    28,264.80x = 39,009.80 × 16,327.20
  4. Step 4: Simplify right side
    28,264.80x = 636,920,806.56
  5. Step 5: Solve for x
    x = 636,920,806.56/28,264.80
  6. Step 6: Final answer
    x = 22,534.06

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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.