Home / 20,178.60-27,860.18-12,627.98

Finding the Fourth Proportional to 20,178.60, 27,860.18 and 12,627.98

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Solution

The fourth proportional to 20,178.60, 27,860.18 and 12,627.98 is: 17,435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.60 : 27,860.18 = 12,627.98 : x
  2. Step 2: Convert to fraction form
    20,178.60/27,860.18 = 12,627.98/x
  3. Step 3: Cross multiply
    20,178.60x = 27,860.18 × 12,627.98
  4. Step 4: Simplify right side
    20,178.60x = 351,817,593.40
  5. Step 5: Solve for x
    x = 351,817,593.40/20,178.60
  6. Step 6: Final answer
    x = 17,435.19

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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.