Home / 12,480,621.60-18,711,601.20-5,286,266.40

Finding the Fourth Proportional to 12,480,621.60, 18,711,601.20 and 5,286,266.40

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Solution

The fourth proportional to 12,480,621.60, 18,711,601.20 and 5,286,266.40 is: 7,925,447.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,621.60 : 18,711,601.20 = 5,286,266.40 : x
  2. Step 2: Convert to fraction form
    12,480,621.60/18,711,601.20 = 5,286,266.40/x
  3. Step 3: Cross multiply
    12,480,621.60x = 18,711,601.20 × 5,286,266.40
  4. Step 4: Simplify right side
    12,480,621.60x = 98,914,508,713,759.69
  5. Step 5: Solve for x
    x = 98,914,508,713,759.69/12,480,621.60
  6. Step 6: Final answer
    x = 7,925,447.30

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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.