Home / 20,965.66-28,926.40-12,463.45

Finding the Fourth Proportional to 20,965.66, 28,926.40 and 12,463.45

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Solution

The fourth proportional to 20,965.66, 28,926.40 and 12,463.45 is: 17,195.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.66 : 28,926.40 = 12,463.45 : x
  2. Step 2: Convert to fraction form
    20,965.66/28,926.40 = 12,463.45/x
  3. Step 3: Cross multiply
    20,965.66x = 28,926.40 × 12,463.45
  4. Step 4: Simplify right side
    20,965.66x = 360,522,740.08
  5. Step 5: Solve for x
    x = 360,522,740.08/20,965.66
  6. Step 6: Final answer
    x = 17,195.87

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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.