Home / 21,258,007.80-31,894,884.90-8,487,677.40

Finding the Fourth Proportional to 21,258,007.80, 31,894,884.90 and 8,487,677.40

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Solution

The fourth proportional to 21,258,007.80, 31,894,884.90 and 8,487,677.40 is: 12,734,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258,007.80 : 31,894,884.90 = 8,487,677.40 : x
  2. Step 2: Convert to fraction form
    21,258,007.80/31,894,884.90 = 8,487,677.40/x
  3. Step 3: Cross multiply
    21,258,007.80x = 31,894,884.90 × 8,487,677.40
  4. Step 4: Simplify right side
    21,258,007.80x = 270,713,493,741,331.25
  5. Step 5: Solve for x
    x = 270,713,493,741,331.25/21,258,007.80
  6. Step 6: Final answer
    x = 12,734,659.63

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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.