Home / 31,489.17-43,466.45-20,882.31

Finding the Fourth Proportional to 31,489.17, 43,466.45 and 20,882.31

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Solution

The fourth proportional to 31,489.17, 43,466.45 and 20,882.31 is: 28,825.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.17 : 43,466.45 = 20,882.31 : x
  2. Step 2: Convert to fraction form
    31,489.17/43,466.45 = 20,882.31/x
  3. Step 3: Cross multiply
    31,489.17x = 43,466.45 × 20,882.31
  4. Step 4: Simplify right side
    31,489.17x = 907,679,779.09
  5. Step 5: Solve for x
    x = 907,679,779.09/31,489.17
  6. Step 6: Final answer
    x = 28,825.14

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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.