Home / 20,031.92-30,038.76-10,669.56

Finding the Fourth Proportional to 20,031.92, 30,038.76 and 10,669.56

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Solution

The fourth proportional to 20,031.92, 30,038.76 and 10,669.56 is: 15,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.92 : 30,038.76 = 10,669.56 : x
  2. Step 2: Convert to fraction form
    20,031.92/30,038.76 = 10,669.56/x
  3. Step 3: Cross multiply
    20,031.92x = 30,038.76 × 10,669.56
  4. Step 4: Simplify right side
    20,031.92x = 320,500,352.15
  5. Step 5: Solve for x
    x = 320,500,352.15/20,031.92
  6. Step 6: Final answer
    x = 15,999.48

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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.