Home / 31,443.21-43,397.79-18,023.45

Finding the Fourth Proportional to 31,443.21, 43,397.79 and 18,023.45

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Solution

The fourth proportional to 31,443.21, 43,397.79 and 18,023.45 is: 24,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,443.21 : 43,397.79 = 18,023.45 : x
  2. Step 2: Convert to fraction form
    31,443.21/43,397.79 = 18,023.45/x
  3. Step 3: Cross multiply
    31,443.21x = 43,397.79 × 18,023.45
  4. Step 4: Simplify right side
    31,443.21x = 782,177,898.18
  5. Step 5: Solve for x
    x = 782,177,898.18/31,443.21
  6. Step 6: Final answer
    x = 24,875.89

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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.