Home / 28,712.80-42,996.30-27,400.60

Finding the Fourth Proportional to 28,712.80, 42,996.30 and 27,400.60

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Solution

The fourth proportional to 28,712.80, 42,996.30 and 27,400.60 is: 41,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.80 : 42,996.30 = 27,400.60 : x
  2. Step 2: Convert to fraction form
    28,712.80/42,996.30 = 27,400.60/x
  3. Step 3: Cross multiply
    28,712.80x = 42,996.30 × 27,400.60
  4. Step 4: Simplify right side
    28,712.80x = 1,178,124,417.78
  5. Step 5: Solve for x
    x = 1,178,124,417.78/28,712.80
  6. Step 6: Final answer
    x = 41,031.33

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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.