Home / 39,898.46-55,059.50-21,749.18

Finding the Fourth Proportional to 39,898.46, 55,059.50 and 21,749.18

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Solution

The fourth proportional to 39,898.46, 55,059.50 and 21,749.18 is: 30,013.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.46 : 55,059.50 = 21,749.18 : x
  2. Step 2: Convert to fraction form
    39,898.46/55,059.50 = 21,749.18/x
  3. Step 3: Cross multiply
    39,898.46x = 55,059.50 × 21,749.18
  4. Step 4: Simplify right side
    39,898.46x = 1,197,498,592.17
  5. Step 5: Solve for x
    x = 1,197,498,592.17/39,898.46
  6. Step 6: Final answer
    x = 30,013.66

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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.