Home / 10,285,863.30-15,428,794.95-8,618,688.90

Finding the Fourth Proportional to 10,285,863.30, 15,428,794.95 and 8,618,688.90

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Solution

The fourth proportional to 10,285,863.30, 15,428,794.95 and 8,618,688.90 is: 12,928,033.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285,863.30 : 15,428,794.95 = 8,618,688.90 : x
  2. Step 2: Convert to fraction form
    10,285,863.30/15,428,794.95 = 8,618,688.90/x
  3. Step 3: Cross multiply
    10,285,863.30x = 15,428,794.95 × 8,618,688.90
  4. Step 4: Simplify right side
    10,285,863.30x = 132,975,983,775,941.05
  5. Step 5: Solve for x
    x = 132,975,983,775,941.05/10,285,863.30
  6. Step 6: Final answer
    x = 12,928,033.35

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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.