Home / 14,975.20-20,668.13-9,885.70

Finding the Fourth Proportional to 14,975.20, 20,668.13 and 9,885.70

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Solution

The fourth proportional to 14,975.20, 20,668.13 and 9,885.70 is: 13,643.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.20 : 20,668.13 = 9,885.70 : x
  2. Step 2: Convert to fraction form
    14,975.20/20,668.13 = 9,885.70/x
  3. Step 3: Cross multiply
    14,975.20x = 20,668.13 × 9,885.70
  4. Step 4: Simplify right side
    14,975.20x = 204,318,932.74
  5. Step 5: Solve for x
    x = 204,318,932.74/14,975.20
  6. Step 6: Final answer
    x = 13,643.82

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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.