Home / 20,521,955.70-30,762,629.55-9,720,270.90

Finding the Fourth Proportional to 20,521,955.70, 30,762,629.55 and 9,720,270.90

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Solution

The fourth proportional to 20,521,955.70, 30,762,629.55 and 9,720,270.90 is: 14,570,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521,955.70 : 30,762,629.55 = 9,720,270.90 : x
  2. Step 2: Convert to fraction form
    20,521,955.70/30,762,629.55 = 9,720,270.90/x
  3. Step 3: Cross multiply
    20,521,955.70x = 30,762,629.55 × 9,720,270.90
  4. Step 4: Simplify right side
    20,521,955.70x = 299,021,092,822,345.12
  5. Step 5: Solve for x
    x = 299,021,092,822,345.12/20,521,955.70
  6. Step 6: Final answer
    x = 14,570,789.31

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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.