Home / 10,077.55-15,124.20-6,979.28

Finding the Fourth Proportional to 10,077.55, 15,124.20 and 6,979.28

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Solution

The fourth proportional to 10,077.55, 15,124.20 and 6,979.28 is: 10,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.55 : 15,124.20 = 6,979.28 : x
  2. Step 2: Convert to fraction form
    10,077.55/15,124.20 = 6,979.28/x
  3. Step 3: Cross multiply
    10,077.55x = 15,124.20 × 6,979.28
  4. Step 4: Simplify right side
    10,077.55x = 105,556,049.11
  5. Step 5: Solve for x
    x = 105,556,049.11/10,077.55
  6. Step 6: Final answer
    x = 10,474.38

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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.