Home / 12,069,331.20-18,103,996.80-7,274,552.40

Finding the Fourth Proportional to 12,069,331.20, 18,103,996.80 and 7,274,552.40

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Solution

The fourth proportional to 12,069,331.20, 18,103,996.80 and 7,274,552.40 is: 10,911,828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,069,331.20 : 18,103,996.80 = 7,274,552.40 : x
  2. Step 2: Convert to fraction form
    12,069,331.20/18,103,996.80 = 7,274,552.40/x
  3. Step 3: Cross multiply
    12,069,331.20x = 18,103,996.80 × 7,274,552.40
  4. Step 4: Simplify right side
    12,069,331.20x = 131,698,473,371,032.33
  5. Step 5: Solve for x
    x = 131,698,473,371,032.33/12,069,331.20
  6. Step 6: Final answer
    x = 10,911,828.60

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Similar ratio
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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.