Home / 13,306,867.20-18,363,196.80-7,876,108.80

Finding the Fourth Proportional to 13,306,867.20, 18,363,196.80 and 7,876,108.80

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Solution

The fourth proportional to 13,306,867.20, 18,363,196.80 and 7,876,108.80 is: 10,868,864.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306,867.20 : 18,363,196.80 = 7,876,108.80 : x
  2. Step 2: Convert to fraction form
    13,306,867.20/18,363,196.80 = 7,876,108.80/x
  3. Step 3: Cross multiply
    13,306,867.20x = 18,363,196.80 × 7,876,108.80
  4. Step 4: Simplify right side
    13,306,867.20x = 144,630,535,912,611.84
  5. Step 5: Solve for x
    x = 144,630,535,912,611.84/13,306,867.20
  6. Step 6: Final answer
    x = 10,868,864.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.