Home / 12,992,849.76-17,929,675.44-7,191,642.72

Finding the Fourth Proportional to 12,992,849.76, 17,929,675.44 and 7,191,642.72

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Solution

The fourth proportional to 12,992,849.76, 17,929,675.44 and 7,191,642.72 is: 9,924,213.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,992,849.76 : 17,929,675.44 = 7,191,642.72 : x
  2. Step 2: Convert to fraction form
    12,992,849.76/17,929,675.44 = 7,191,642.72/x
  3. Step 3: Cross multiply
    12,992,849.76x = 17,929,675.44 × 7,191,642.72
  4. Step 4: Simplify right side
    12,992,849.76x = 128,943,819,850,038.80
  5. Step 5: Solve for x
    x = 128,943,819,850,038.80/12,992,849.76
  6. Step 6: Final answer
    x = 9,924,213.87

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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.