Home / 21,575,658.72-29,775,314.28-12,408,308.88

Finding the Fourth Proportional to 21,575,658.72, 29,775,314.28 and 12,408,308.88

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Solution

The fourth proportional to 21,575,658.72, 29,775,314.28 and 12,408,308.88 is: 17,123,986.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,575,658.72 : 29,775,314.28 = 12,408,308.88 : x
  2. Step 2: Convert to fraction form
    21,575,658.72/29,775,314.28 = 12,408,308.88/x
  3. Step 3: Cross multiply
    21,575,658.72x = 29,775,314.28 × 12,408,308.88
  4. Step 4: Simplify right side
    21,575,658.72x = 369,461,296,585,314.88
  5. Step 5: Solve for x
    x = 369,461,296,585,314.88/21,575,658.72
  6. Step 6: Final answer
    x = 17,123,986.87

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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.