Home / 13,122,089.76-18,108,495.12-7,320,872.76

Finding the Fourth Proportional to 13,122,089.76, 18,108,495.12 and 7,320,872.76

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Solution

The fourth proportional to 13,122,089.76, 18,108,495.12 and 7,320,872.76 is: 10,102,810.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,089.76 : 18,108,495.12 = 7,320,872.76 : x
  2. Step 2: Convert to fraction form
    13,122,089.76/18,108,495.12 = 7,320,872.76/x
  3. Step 3: Cross multiply
    13,122,089.76x = 18,108,495.12 × 7,320,872.76
  4. Step 4: Simplify right side
    13,122,089.76x = 132,569,988,648,600.94
  5. Step 5: Solve for x
    x = 132,569,988,648,600.94/13,122,089.76
  6. Step 6: Final answer
    x = 10,102,810.69

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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.