Home / 21,575,656.72-29,775,311.52-12,408,306.88

Finding the Fourth Proportional to 21,575,656.72, 29,775,311.52 and 12,408,306.88

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Solution

The fourth proportional to 21,575,656.72, 29,775,311.52 and 12,408,306.88 is: 17,123,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575,656.72 : 29,775,311.52 = 12,408,306.88 : x
  2. Step 2: Convert to fraction form
    21,575,656.72/29,775,311.52 = 12,408,306.88/x
  3. Step 3: Cross multiply
    21,575,656.72x = 29,775,311.52 × 12,408,306.88
  4. Step 4: Simplify right side
    21,575,656.72x = 369,461,202,787,759.25
  5. Step 5: Solve for x
    x = 369,461,202,787,759.25/21,575,656.72
  6. Step 6: Final answer
    x = 17,123,984.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.