Home / 12,519.81-18,779.76-10,168.70

Finding the Fourth Proportional to 12,519.81, 18,779.76 and 10,168.70

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Solution

The fourth proportional to 12,519.81, 18,779.76 and 10,168.70 is: 15,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.81 : 18,779.76 = 10,168.70 : x
  2. Step 2: Convert to fraction form
    12,519.81/18,779.76 = 10,168.70/x
  3. Step 3: Cross multiply
    12,519.81x = 18,779.76 × 10,168.70
  4. Step 4: Simplify right side
    12,519.81x = 190,965,651.61
  5. Step 5: Solve for x
    x = 190,965,651.61/12,519.81
  6. Step 6: Final answer
    x = 15,253.08

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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.