Home / 20,649,657.40-30,974,486.10-12,587,500.60

Finding the Fourth Proportional to 20,649,657.40, 30,974,486.10 and 12,587,500.60

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Solution

The fourth proportional to 20,649,657.40, 30,974,486.10 and 12,587,500.60 is: 18,881,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649,657.40 : 30,974,486.10 = 12,587,500.60 : x
  2. Step 2: Convert to fraction form
    20,649,657.40/30,974,486.10 = 12,587,500.60/x
  3. Step 3: Cross multiply
    20,649,657.40x = 30,974,486.10 × 12,587,500.60
  4. Step 4: Simplify right side
    20,649,657.40x = 389,891,362,368,441.69
  5. Step 5: Solve for x
    x = 389,891,362,368,441.69/20,649,657.40
  6. Step 6: Final answer
    x = 18,881,250.90

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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.