Home / 31,482.93-43,433.19-20,854.11

Finding the Fourth Proportional to 31,482.93, 43,433.19 and 20,854.11

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Solution

The fourth proportional to 31,482.93, 43,433.19 and 20,854.11 is: 28,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,482.93 : 43,433.19 = 20,854.11 : x
  2. Step 2: Convert to fraction form
    31,482.93/43,433.19 = 20,854.11/x
  3. Step 3: Cross multiply
    31,482.93x = 43,433.19 × 20,854.11
  4. Step 4: Simplify right side
    31,482.93x = 905,760,521.91
  5. Step 5: Solve for x
    x = 905,760,521.91/31,482.93
  6. Step 6: Final answer
    x = 28,769.89

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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.