Home / 15,128,718.19-20,874,775.75-9,017,715.31

Finding the Fourth Proportional to 15,128,718.19, 20,874,775.75 and 9,017,715.31

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Solution

The fourth proportional to 15,128,718.19, 20,874,775.75 and 9,017,715.31 is: 12,442,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128,718.19 : 20,874,775.75 = 9,017,715.31 : x
  2. Step 2: Convert to fraction form
    15,128,718.19/20,874,775.75 = 9,017,715.31/x
  3. Step 3: Cross multiply
    15,128,718.19x = 20,874,775.75 × 9,017,715.31
  4. Step 4: Simplify right side
    15,128,718.19x = 188,242,784,873,591.75
  5. Step 5: Solve for x
    x = 188,242,784,873,591.75/15,128,718.19
  6. Step 6: Final answer
    x = 12,442,745.15

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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.