Home / 20,113.11-27,756.05-12,153.87

Finding the Fourth Proportional to 20,113.11, 27,756.05 and 12,153.87

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Solution

The fourth proportional to 20,113.11, 27,756.05 and 12,153.87 is: 16,772.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.11 : 27,756.05 = 12,153.87 : x
  2. Step 2: Convert to fraction form
    20,113.11/27,756.05 = 12,153.87/x
  3. Step 3: Cross multiply
    20,113.11x = 27,756.05 × 12,153.87
  4. Step 4: Simplify right side
    20,113.11x = 337,343,362.64
  5. Step 5: Solve for x
    x = 337,343,362.64/20,113.11
  6. Step 6: Final answer
    x = 16,772.31

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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.