Home / 31,579.20-43,582.28-18,158.31

Finding the Fourth Proportional to 31,579.20, 43,582.28 and 18,158.31

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Solution

The fourth proportional to 31,579.20, 43,582.28 and 18,158.31 is: 25,060.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.20 : 43,582.28 = 18,158.31 : x
  2. Step 2: Convert to fraction form
    31,579.20/43,582.28 = 18,158.31/x
  3. Step 3: Cross multiply
    31,579.20x = 43,582.28 × 18,158.31
  4. Step 4: Simplify right side
    31,579.20x = 791,380,459.96
  5. Step 5: Solve for x
    x = 791,380,459.96/31,579.20
  6. Step 6: Final answer
    x = 25,060.18

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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.