Home / 15,531.20-23,296.80-5,141.60

Finding the Fourth Proportional to 15,531.20, 23,296.80 and 5,141.60

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Solution

The fourth proportional to 15,531.20, 23,296.80 and 5,141.60 is: 7,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.20 : 23,296.80 = 5,141.60 : x
  2. Step 2: Convert to fraction form
    15,531.20/23,296.80 = 5,141.60/x
  3. Step 3: Cross multiply
    15,531.20x = 23,296.80 × 5,141.60
  4. Step 4: Simplify right side
    15,531.20x = 119,782,826.88
  5. Step 5: Solve for x
    x = 119,782,826.88/15,531.20
  6. Step 6: Final answer
    x = 7,712.40

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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.