Home / 31,574.16-43,570.80-18,135.90

Finding the Fourth Proportional to 31,574.16, 43,570.80 and 18,135.90

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Solution

The fourth proportional to 31,574.16, 43,570.80 and 18,135.90 is: 25,026.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,574.16 : 43,570.80 = 18,135.90 : x
  2. Step 2: Convert to fraction form
    31,574.16/43,570.80 = 18,135.90/x
  3. Step 3: Cross multiply
    31,574.16x = 43,570.80 × 18,135.90
  4. Step 4: Simplify right side
    31,574.16x = 790,195,671.72
  5. Step 5: Solve for x
    x = 790,195,671.72/31,574.16
  6. Step 6: Final answer
    x = 25,026.66

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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.