Home / 31,489.70-43,441.76-21,277.47

Finding the Fourth Proportional to 31,489.70, 43,441.76 and 21,277.47

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Solution

The fourth proportional to 31,489.70, 43,441.76 and 21,277.47 is: 29,353.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,489.70 : 43,441.76 = 21,277.47 : x
  2. Step 2: Convert to fraction form
    31,489.70/43,441.76 = 21,277.47/x
  3. Step 3: Cross multiply
    31,489.70x = 43,441.76 × 21,277.47
  4. Step 4: Simplify right side
    31,489.70x = 924,330,638.76
  5. Step 5: Solve for x
    x = 924,330,638.76/31,489.70
  6. Step 6: Final answer
    x = 29,353.43

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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.