Home / 15,112,139.71-20,854,760.53-8,585,780.57

Finding the Fourth Proportional to 15,112,139.71, 20,854,760.53 and 8,585,780.57

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Solution

The fourth proportional to 15,112,139.71, 20,854,760.53 and 8,585,780.57 is: 11,848,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112,139.71 : 20,854,760.53 = 8,585,780.57 : x
  2. Step 2: Convert to fraction form
    15,112,139.71/20,854,760.53 = 8,585,780.57/x
  3. Step 3: Cross multiply
    15,112,139.71x = 20,854,760.53 × 8,585,780.57
  4. Step 4: Simplify right side
    15,112,139.71x = 179,054,397,781,149.34
  5. Step 5: Solve for x
    x = 179,054,397,781,149.34/15,112,139.71
  6. Step 6: Final answer
    x = 11,848,381.58

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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.