Home / 20,221,235.05-30,328,862.76-7,438,750.40

Finding the Fourth Proportional to 20,221,235.05, 30,328,862.76 and 7,438,750.40

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Solution

The fourth proportional to 20,221,235.05, 30,328,862.76 and 7,438,750.40 is: 11,157,025.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221,235.05 : 30,328,862.76 = 7,438,750.40 : x
  2. Step 2: Convert to fraction form
    20,221,235.05/30,328,862.76 = 7,438,750.40/x
  3. Step 3: Cross multiply
    20,221,235.05x = 30,328,862.76 × 7,438,750.40
  4. Step 4: Simplify right side
    20,221,235.05x = 225,608,839,987,495.12
  5. Step 5: Solve for x
    x = 225,608,839,987,495.12/20,221,235.05
  6. Step 6: Final answer
    x = 11,157,025.74

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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.