Home / 13,155.78-19,716.66-9,842.88

Finding the Fourth Proportional to 13,155.78, 19,716.66 and 9,842.88

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Solution

The fourth proportional to 13,155.78, 19,716.66 and 9,842.88 is: 14,751.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.78 : 19,716.66 = 9,842.88 : x
  2. Step 2: Convert to fraction form
    13,155.78/19,716.66 = 9,842.88/x
  3. Step 3: Cross multiply
    13,155.78x = 19,716.66 × 9,842.88
  4. Step 4: Simplify right side
    13,155.78x = 194,068,718.38
  5. Step 5: Solve for x
    x = 194,068,718.38/13,155.78
  6. Step 6: Final answer
    x = 14,751.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.