Home / 20,749.06-31,145.22-18,392.11

Finding the Fourth Proportional to 20,749.06, 31,145.22 and 18,392.11

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Solution

The fourth proportional to 20,749.06, 31,145.22 and 18,392.11 is: 27,607.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.06 : 31,145.22 = 18,392.11 : x
  2. Step 2: Convert to fraction form
    20,749.06/31,145.22 = 18,392.11/x
  3. Step 3: Cross multiply
    20,749.06x = 31,145.22 × 18,392.11
  4. Step 4: Simplify right side
    20,749.06x = 572,826,220.47
  5. Step 5: Solve for x
    x = 572,826,220.47/20,749.06
  6. Step 6: Final answer
    x = 27,607.34

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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.