Home / 21,990,349.20-32,998,386.60-9,209,780.40

Finding the Fourth Proportional to 21,990,349.20, 32,998,386.60 and 9,209,780.40

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Solution

The fourth proportional to 21,990,349.20, 32,998,386.60 and 9,209,780.40 is: 13,820,057.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990,349.20 : 32,998,386.60 = 9,209,780.40 : x
  2. Step 2: Convert to fraction form
    21,990,349.20/32,998,386.60 = 9,209,780.40/x
  3. Step 3: Cross multiply
    21,990,349.20x = 32,998,386.60 × 9,209,780.40
  4. Step 4: Simplify right side
    21,990,349.20x = 303,907,894,140,302.69
  5. Step 5: Solve for x
    x = 303,907,894,140,302.69/21,990,349.20
  6. Step 6: Final answer
    x = 13,820,057.67

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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.