Home / 15,515.20-23,272.80-5,125.60

Finding the Fourth Proportional to 15,515.20, 23,272.80 and 5,125.60

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Solution

The fourth proportional to 15,515.20, 23,272.80 and 5,125.60 is: 7,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.20 : 23,272.80 = 5,125.60 : x
  2. Step 2: Convert to fraction form
    15,515.20/23,272.80 = 5,125.60/x
  3. Step 3: Cross multiply
    15,515.20x = 23,272.80 × 5,125.60
  4. Step 4: Simplify right side
    15,515.20x = 119,287,063.68
  5. Step 5: Solve for x
    x = 119,287,063.68/15,515.20
  6. Step 6: Final answer
    x = 7,688.40

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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.