Home / 12,478.46-18,760.97-10,030.53

Finding the Fourth Proportional to 12,478.46, 18,760.97 and 10,030.53

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Solution

The fourth proportional to 12,478.46, 18,760.97 and 10,030.53 is: 15,080.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.46 : 18,760.97 = 10,030.53 : x
  2. Step 2: Convert to fraction form
    12,478.46/18,760.97 = 10,030.53/x
  3. Step 3: Cross multiply
    12,478.46x = 18,760.97 × 10,030.53
  4. Step 4: Simplify right side
    12,478.46x = 188,182,511.42
  5. Step 5: Solve for x
    x = 188,182,511.42/12,478.46
  6. Step 6: Final answer
    x = 15,080.59

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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.