Home / 31,331.04-43,228.80-18,746.88

Finding the Fourth Proportional to 31,331.04, 43,228.80 and 18,746.88

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Solution

The fourth proportional to 31,331.04, 43,228.80 and 18,746.88 is: 25,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.04 : 43,228.80 = 18,746.88 : x
  2. Step 2: Convert to fraction form
    31,331.04/43,228.80 = 18,746.88/x
  3. Step 3: Cross multiply
    31,331.04x = 43,228.80 × 18,746.88
  4. Step 4: Simplify right side
    31,331.04x = 810,405,126.14
  5. Step 5: Solve for x
    x = 810,405,126.14/31,331.04
  6. Step 6: Final answer
    x = 25,865.89

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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.