Home / 31,686.59-43,738.43-18,263.20

Finding the Fourth Proportional to 31,686.59, 43,738.43 and 18,263.20

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Solution

The fourth proportional to 31,686.59, 43,738.43 and 18,263.20 is: 25,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.59 : 43,738.43 = 18,263.20 : x
  2. Step 2: Convert to fraction form
    31,686.59/43,738.43 = 18,263.20/x
  3. Step 3: Cross multiply
    31,686.59x = 43,738.43 × 18,263.20
  4. Step 4: Simplify right side
    31,686.59x = 798,803,694.78
  5. Step 5: Solve for x
    x = 798,803,694.78/31,686.59
  6. Step 6: Final answer
    x = 25,209.52

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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.