Home / 20,447,999.60-30,660,335.40-7,668,921.20

Finding the Fourth Proportional to 20,447,999.60, 30,660,335.40 and 7,668,921.20

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Solution

The fourth proportional to 20,447,999.60, 30,660,335.40 and 7,668,921.20 is: 11,499,007.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447,999.60 : 30,660,335.40 = 7,668,921.20 : x
  2. Step 2: Convert to fraction form
    20,447,999.60/30,660,335.40 = 7,668,921.20/x
  3. Step 3: Cross multiply
    20,447,999.60x = 30,660,335.40 × 7,668,921.20
  4. Step 4: Simplify right side
    20,447,999.60x = 235,131,696,148,170.47
  5. Step 5: Solve for x
    x = 235,131,696,148,170.47/20,447,999.60
  6. Step 6: Final answer
    x = 11,499,007.27

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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.