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Finding the Fourth Proportional to 28,525.80, 42,707.70 and 26,974.20

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Solution

The fourth proportional to 28,525.80, 42,707.70 and 26,974.20 is: 40,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.80 : 42,707.70 = 26,974.20 : x
  2. Step 2: Convert to fraction form
    28,525.80/42,707.70 = 26,974.20/x
  3. Step 3: Cross multiply
    28,525.80x = 42,707.70 × 26,974.20
  4. Step 4: Simplify right side
    28,525.80x = 1,152,006,041.34
  5. Step 5: Solve for x
    x = 1,152,006,041.34/28,525.80
  6. Step 6: Final answer
    x = 40,384.71

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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.