Home / 13,756.48-20,655.78-12,126.76

Finding the Fourth Proportional to 13,756.48, 20,655.78 and 12,126.76

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Solution

The fourth proportional to 13,756.48, 20,655.78 and 12,126.76 is: 18,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.48 : 20,655.78 = 12,126.76 : x
  2. Step 2: Convert to fraction form
    13,756.48/20,655.78 = 12,126.76/x
  3. Step 3: Cross multiply
    13,756.48x = 20,655.78 × 12,126.76
  4. Step 4: Simplify right side
    13,756.48x = 250,487,686.67
  5. Step 5: Solve for x
    x = 250,487,686.67/13,756.48
  6. Step 6: Final answer
    x = 18,208.71

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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.