Home / 12,770.04-19,138.43-7,147.47

Finding the Fourth Proportional to 12,770.04, 19,138.43 and 7,147.47

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Solution

The fourth proportional to 12,770.04, 19,138.43 and 7,147.47 is: 10,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.04 : 19,138.43 = 7,147.47 : x
  2. Step 2: Convert to fraction form
    12,770.04/19,138.43 = 7,147.47/x
  3. Step 3: Cross multiply
    12,770.04x = 19,138.43 × 7,147.47
  4. Step 4: Simplify right side
    12,770.04x = 136,791,354.27
  5. Step 5: Solve for x
    x = 136,791,354.27/12,770.04
  6. Step 6: Final answer
    x = 10,711.90

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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.