Home / 10,508.40-15,730.20-6,112.80

Finding the Fourth Proportional to 10,508.40, 15,730.20 and 6,112.80

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Solution

The fourth proportional to 10,508.40, 15,730.20 and 6,112.80 is: 9,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,508.40 : 15,730.20 = 6,112.80 : x
  2. Step 2: Convert to fraction form
    10,508.40/15,730.20 = 6,112.80/x
  3. Step 3: Cross multiply
    10,508.40x = 15,730.20 × 6,112.80
  4. Step 4: Simplify right side
    10,508.40x = 96,155,566.56
  5. Step 5: Solve for x
    x = 96,155,566.56/10,508.40
  6. Step 6: Final answer
    x = 9,150.35

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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.