Home / 13,437,728.40-20,156,592.60-7,981,600.80

Finding the Fourth Proportional to 13,437,728.40, 20,156,592.60 and 7,981,600.80

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Solution

The fourth proportional to 13,437,728.40, 20,156,592.60 and 7,981,600.80 is: 11,972,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437,728.40 : 20,156,592.60 = 7,981,600.80 : x
  2. Step 2: Convert to fraction form
    13,437,728.40/20,156,592.60 = 7,981,600.80/x
  3. Step 3: Cross multiply
    13,437,728.40x = 20,156,592.60 × 7,981,600.80
  4. Step 4: Simplify right side
    13,437,728.40x = 160,881,875,621,434.09
  5. Step 5: Solve for x
    x = 160,881,875,621,434.09/13,437,728.40
  6. Step 6: Final answer
    x = 11,972,401.20

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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.