Home / 40,891.04-56,406.84-28,142.72

Finding the Fourth Proportional to 40,891.04, 56,406.84 and 28,142.72

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Solution

The fourth proportional to 40,891.04, 56,406.84 and 28,142.72 is: 38,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,891.04 : 56,406.84 = 28,142.72 : x
  2. Step 2: Convert to fraction form
    40,891.04/56,406.84 = 28,142.72/x
  3. Step 3: Cross multiply
    40,891.04x = 56,406.84 × 28,142.72
  4. Step 4: Simplify right side
    40,891.04x = 1,587,441,904.20
  5. Step 5: Solve for x
    x = 1,587,441,904.20/40,891.04
  6. Step 6: Final answer
    x = 38,821.27

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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.