Home / 31,407.56-43,346.12-18,660.85

Finding the Fourth Proportional to 31,407.56, 43,346.12 and 18,660.85

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Solution

The fourth proportional to 31,407.56, 43,346.12 and 18,660.85 is: 25,754.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,407.56 : 43,346.12 = 18,660.85 : x
  2. Step 2: Convert to fraction form
    31,407.56/43,346.12 = 18,660.85/x
  3. Step 3: Cross multiply
    31,407.56x = 43,346.12 × 18,660.85
  4. Step 4: Simplify right side
    31,407.56x = 808,875,180.02
  5. Step 5: Solve for x
    x = 808,875,180.02/31,407.56
  6. Step 6: Final answer
    x = 25,754.16

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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.