Home / 15,338.60-23,007.90-5,478.20

Finding the Fourth Proportional to 15,338.60, 23,007.90 and 5,478.20

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Solution

The fourth proportional to 15,338.60, 23,007.90 and 5,478.20 is: 8,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.60 : 23,007.90 = 5,478.20 : x
  2. Step 2: Convert to fraction form
    15,338.60/23,007.90 = 5,478.20/x
  3. Step 3: Cross multiply
    15,338.60x = 23,007.90 × 5,478.20
  4. Step 4: Simplify right side
    15,338.60x = 126,041,877.78
  5. Step 5: Solve for x
    x = 126,041,877.78/15,338.60
  6. Step 6: Final answer
    x = 8,217.30

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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.