Home / 15,678.20-23,517.30-5,148.20

Finding the Fourth Proportional to 15,678.20, 23,517.30 and 5,148.20

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Solution

The fourth proportional to 15,678.20, 23,517.30 and 5,148.20 is: 7,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.20 : 23,517.30 = 5,148.20 : x
  2. Step 2: Convert to fraction form
    15,678.20/23,517.30 = 5,148.20/x
  3. Step 3: Cross multiply
    15,678.20x = 23,517.30 × 5,148.20
  4. Step 4: Simplify right side
    15,678.20x = 121,071,763.86
  5. Step 5: Solve for x
    x = 121,071,763.86/15,678.20
  6. Step 6: Final answer
    x = 7,722.30

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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.