Home / 12,480,014.30-18,720,021.45-7,086,580.70

Finding the Fourth Proportional to 12,480,014.30, 18,720,021.45 and 7,086,580.70

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Solution

The fourth proportional to 12,480,014.30, 18,720,021.45 and 7,086,580.70 is: 10,629,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,014.30 : 18,720,021.45 = 7,086,580.70 : x
  2. Step 2: Convert to fraction form
    12,480,014.30/18,720,021.45 = 7,086,580.70/x
  3. Step 3: Cross multiply
    12,480,014.30x = 18,720,021.45 × 7,086,580.70
  4. Step 4: Simplify right side
    12,480,014.30x = 132,660,942,711,156.02
  5. Step 5: Solve for x
    x = 132,660,942,711,156.02/12,480,014.30
  6. Step 6: Final answer
    x = 10,629,871.05

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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.