Home / 20,212,934.80-30,319,402.20-15,429,965.80

Finding the Fourth Proportional to 20,212,934.80, 30,319,402.20 and 15,429,965.80

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Solution

The fourth proportional to 20,212,934.80, 30,319,402.20 and 15,429,965.80 is: 23,144,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,934.80 : 30,319,402.20 = 15,429,965.80 : x
  2. Step 2: Convert to fraction form
    20,212,934.80/30,319,402.20 = 15,429,965.80/x
  3. Step 3: Cross multiply
    20,212,934.80x = 30,319,402.20 × 15,429,965.80
  4. Step 4: Simplify right side
    20,212,934.80x = 467,827,339,022,444.75
  5. Step 5: Solve for x
    x = 467,827,339,022,444.75/20,212,934.80
  6. Step 6: Final answer
    x = 23,144,948.70

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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.