Home / 31,405.91-43,343.90-17,981.48

Finding the Fourth Proportional to 31,405.91, 43,343.90 and 17,981.48

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Solution

The fourth proportional to 31,405.91, 43,343.90 and 17,981.48 is: 24,816.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.91 : 43,343.90 = 17,981.48 : x
  2. Step 2: Convert to fraction form
    31,405.91/43,343.90 = 17,981.48/x
  3. Step 3: Cross multiply
    31,405.91x = 43,343.90 × 17,981.48
  4. Step 4: Simplify right side
    31,405.91x = 779,387,254.25
  5. Step 5: Solve for x
    x = 779,387,254.25/31,405.91
  6. Step 6: Final answer
    x = 24,816.58

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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.