Home / 31,402.66-43,338.08-17,978.12

Finding the Fourth Proportional to 31,402.66, 43,338.08 and 17,978.12

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Solution

The fourth proportional to 31,402.66, 43,338.08 and 17,978.12 is: 24,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,402.66 : 43,338.08 = 17,978.12 : x
  2. Step 2: Convert to fraction form
    31,402.66/43,338.08 = 17,978.12/x
  3. Step 3: Cross multiply
    31,402.66x = 43,338.08 × 17,978.12
  4. Step 4: Simplify right side
    31,402.66x = 779,137,202.81
  5. Step 5: Solve for x
    x = 779,137,202.81/31,402.66
  6. Step 6: Final answer
    x = 24,811.18

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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.