Home / 15,359,238.55-21,195,821.46-8,390,012.77

Finding the Fourth Proportional to 15,359,238.55, 21,195,821.46 and 8,390,012.77

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Solution

The fourth proportional to 15,359,238.55, 21,195,821.46 and 8,390,012.77 is: 11,578,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359,238.55 : 21,195,821.46 = 8,390,012.77 : x
  2. Step 2: Convert to fraction form
    15,359,238.55/21,195,821.46 = 8,390,012.77/x
  3. Step 3: Cross multiply
    15,359,238.55x = 21,195,821.46 × 8,390,012.77
  4. Step 4: Simplify right side
    15,359,238.55x = 177,833,212,720,040.03
  5. Step 5: Solve for x
    x = 177,833,212,720,040.03/15,359,238.55
  6. Step 6: Final answer
    x = 11,578,257.10

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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.