Home / 20,649,632.40-30,974,448.60-12,587,475.60

Finding the Fourth Proportional to 20,649,632.40, 30,974,448.60 and 12,587,475.60

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Solution

The fourth proportional to 20,649,632.40, 30,974,448.60 and 12,587,475.60 is: 18,881,213.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649,632.40 : 30,974,448.60 = 12,587,475.60 : x
  2. Step 2: Convert to fraction form
    20,649,632.40/30,974,448.60 = 12,587,475.60/x
  3. Step 3: Cross multiply
    20,649,632.40x = 30,974,448.60 × 12,587,475.60
  4. Step 4: Simplify right side
    20,649,632.40x = 389,890,115,975,954.19
  5. Step 5: Solve for x
    x = 389,890,115,975,954.19/20,649,632.40
  6. Step 6: Final answer
    x = 18,881,213.40

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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.