Home / 15,177.80-20,937.84-10,143.60

Finding the Fourth Proportional to 15,177.80, 20,937.84 and 10,143.60

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Solution

The fourth proportional to 15,177.80, 20,937.84 and 10,143.60 is: 13,993.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.80 : 20,937.84 = 10,143.60 : x
  2. Step 2: Convert to fraction form
    15,177.80/20,937.84 = 10,143.60/x
  3. Step 3: Cross multiply
    15,177.80x = 20,937.84 × 10,143.60
  4. Step 4: Simplify right side
    15,177.80x = 212,385,073.82
  5. Step 5: Solve for x
    x = 212,385,073.82/15,177.80
  6. Step 6: Final answer
    x = 13,993.14

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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.