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Finding the Fourth Proportional to 28,271.80, 42,407.70 and 24,815.80

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Solution

The fourth proportional to 28,271.80, 42,407.70 and 24,815.80 is: 37,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.80 : 42,407.70 = 24,815.80 : x
  2. Step 2: Convert to fraction form
    28,271.80/42,407.70 = 24,815.80/x
  3. Step 3: Cross multiply
    28,271.80x = 42,407.70 × 24,815.80
  4. Step 4: Simplify right side
    28,271.80x = 1,052,381,001.66
  5. Step 5: Solve for x
    x = 1,052,381,001.66/28,271.80
  6. Step 6: Final answer
    x = 37,223.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.