Home / 20,447,997.60-30,660,332.40-7,668,919.20

Finding the Fourth Proportional to 20,447,997.60, 30,660,332.40 and 7,668,919.20

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Solution

The fourth proportional to 20,447,997.60, 30,660,332.40 and 7,668,919.20 is: 11,499,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447,997.60 : 30,660,332.40 = 7,668,919.20 : x
  2. Step 2: Convert to fraction form
    20,447,997.60/30,660,332.40 = 7,668,919.20/x
  3. Step 3: Cross multiply
    20,447,997.60x = 30,660,332.40 × 7,668,919.20
  4. Step 4: Simplify right side
    20,447,997.60x = 235,131,611,820,742.06
  5. Step 5: Solve for x
    x = 235,131,611,820,742.06/20,447,997.60
  6. Step 6: Final answer
    x = 11,499,004.28

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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.