Home / 15,679.83-21,641.52-9,395.85

Finding the Fourth Proportional to 15,679.83, 21,641.52 and 9,395.85

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Solution

The fourth proportional to 15,679.83, 21,641.52 and 9,395.85 is: 12,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.83 : 21,641.52 = 9,395.85 : x
  2. Step 2: Convert to fraction form
    15,679.83/21,641.52 = 9,395.85/x
  3. Step 3: Cross multiply
    15,679.83x = 21,641.52 × 9,395.85
  4. Step 4: Simplify right side
    15,679.83x = 203,340,475.69
  5. Step 5: Solve for x
    x = 203,340,475.69/15,679.83
  6. Step 6: Final answer
    x = 12,968.28

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1.5x scale

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.