Home / 20,970,121.52-31,466,482.44-8,847,986.72

Finding the Fourth Proportional to 20,970,121.52, 31,466,482.44 and 8,847,986.72

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Solution

The fourth proportional to 20,970,121.52, 31,466,482.44 and 8,847,986.72 is: 13,276,747.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970,121.52 : 31,466,482.44 = 8,847,986.72 : x
  2. Step 2: Convert to fraction form
    20,970,121.52/31,466,482.44 = 8,847,986.72/x
  3. Step 3: Cross multiply
    20,970,121.52x = 31,466,482.44 × 8,847,986.72
  4. Step 4: Simplify right side
    20,970,121.52x = 278,415,018,754,233.22
  5. Step 5: Solve for x
    x = 278,415,018,754,233.22/20,970,121.52
  6. Step 6: Final answer
    x = 13,276,747.99

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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.