Home / 20,040.47-30,031.95-11,256.90

Finding the Fourth Proportional to 20,040.47, 30,031.95 and 11,256.90

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Solution

The fourth proportional to 20,040.47, 30,031.95 and 11,256.90 is: 16,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.47 : 30,031.95 = 11,256.90 : x
  2. Step 2: Convert to fraction form
    20,040.47/30,031.95 = 11,256.90/x
  3. Step 3: Cross multiply
    20,040.47x = 30,031.95 × 11,256.90
  4. Step 4: Simplify right side
    20,040.47x = 338,066,657.96
  5. Step 5: Solve for x
    x = 338,066,657.96/20,040.47
  6. Step 6: Final answer
    x = 16,869.20

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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.