Home / 31,581.24-43,587.72-18,835.20

Finding the Fourth Proportional to 31,581.24, 43,587.72 and 18,835.20

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Solution

The fourth proportional to 31,581.24, 43,587.72 and 18,835.20 is: 25,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,581.24 : 43,587.72 = 18,835.20 : x
  2. Step 2: Convert to fraction form
    31,581.24/43,587.72 = 18,835.20/x
  3. Step 3: Cross multiply
    31,581.24x = 43,587.72 × 18,835.20
  4. Step 4: Simplify right side
    31,581.24x = 820,983,423.74
  5. Step 5: Solve for x
    x = 820,983,423.74/31,581.24
  6. Step 6: Final answer
    x = 25,995.92

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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.