Home / 31,470.02-43,433.62-18,723.76

Finding the Fourth Proportional to 31,470.02, 43,433.62 and 18,723.76

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Solution

The fourth proportional to 31,470.02, 43,433.62 and 18,723.76 is: 25,841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.02 : 43,433.62 = 18,723.76 : x
  2. Step 2: Convert to fraction form
    31,470.02/43,433.62 = 18,723.76/x
  3. Step 3: Cross multiply
    31,470.02x = 43,433.62 × 18,723.76
  4. Step 4: Simplify right side
    31,470.02x = 813,240,521.42
  5. Step 5: Solve for x
    x = 813,240,521.42/31,470.02
  6. Step 6: Final answer
    x = 25,841.76

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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.