Home / 20,681.12-31,040.06-13,641.44

Finding the Fourth Proportional to 20,681.12, 31,040.06 and 13,641.44

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Solution

The fourth proportional to 20,681.12, 31,040.06 and 13,641.44 is: 20,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.12 : 31,040.06 = 13,641.44 : x
  2. Step 2: Convert to fraction form
    20,681.12/31,040.06 = 13,641.44/x
  3. Step 3: Cross multiply
    20,681.12x = 31,040.06 × 13,641.44
  4. Step 4: Simplify right side
    20,681.12x = 423,431,116.09
  5. Step 5: Solve for x
    x = 423,431,116.09/20,681.12
  6. Step 6: Final answer
    x = 20,474.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.