Home / 20,778,049.40-31,167,074.10-15,038,486.60

Finding the Fourth Proportional to 20,778,049.40, 31,167,074.10 and 15,038,486.60

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Solution

The fourth proportional to 20,778,049.40, 31,167,074.10 and 15,038,486.60 is: 22,557,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778,049.40 : 31,167,074.10 = 15,038,486.60 : x
  2. Step 2: Convert to fraction form
    20,778,049.40/31,167,074.10 = 15,038,486.60/x
  3. Step 3: Cross multiply
    20,778,049.40x = 31,167,074.10 × 15,038,486.60
  4. Step 4: Simplify right side
    20,778,049.40x = 468,705,626,214,057.06
  5. Step 5: Solve for x
    x = 468,705,626,214,057.06/20,778,049.40
  6. Step 6: Final answer
    x = 22,557,729.90

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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.