Home / 31,742.48-43,811.88-20,545.04

Finding the Fourth Proportional to 31,742.48, 43,811.88 and 20,545.04

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Solution

The fourth proportional to 31,742.48, 43,811.88 and 20,545.04 is: 28,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.48 : 43,811.88 = 20,545.04 : x
  2. Step 2: Convert to fraction form
    31,742.48/43,811.88 = 20,545.04/x
  3. Step 3: Cross multiply
    31,742.48x = 43,811.88 × 20,545.04
  4. Step 4: Simplify right side
    31,742.48x = 900,116,827.08
  5. Step 5: Solve for x
    x = 900,116,827.08/31,742.48
  6. Step 6: Final answer
    x = 28,356.85

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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.