Home / 28,440.80-42,712.40-27,519.20

Finding the Fourth Proportional to 28,440.80, 42,712.40 and 27,519.20

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Solution

The fourth proportional to 28,440.80, 42,712.40 and 27,519.20 is: 41,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.80 : 42,712.40 = 27,519.20 : x
  2. Step 2: Convert to fraction form
    28,440.80/42,712.40 = 27,519.20/x
  3. Step 3: Cross multiply
    28,440.80x = 42,712.40 × 27,519.20
  4. Step 4: Simplify right side
    28,440.80x = 1,175,411,078.08
  5. Step 5: Solve for x
    x = 1,175,411,078.08/28,440.80
  6. Step 6: Final answer
    x = 41,328.34

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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.