Home / 31,507.24-43,479.54-18,078.20

Finding the Fourth Proportional to 31,507.24, 43,479.54 and 18,078.20

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Solution

The fourth proportional to 31,507.24, 43,479.54 and 18,078.20 is: 24,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,507.24 : 43,479.54 = 18,078.20 : x
  2. Step 2: Convert to fraction form
    31,507.24/43,479.54 = 18,078.20/x
  3. Step 3: Cross multiply
    31,507.24x = 43,479.54 × 18,078.20
  4. Step 4: Simplify right side
    31,507.24x = 786,031,820.03
  5. Step 5: Solve for x
    x = 786,031,820.03/31,507.24
  6. Step 6: Final answer
    x = 24,947.66

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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.