Home / 10,115.70-13,947.60-8,934.72

Finding the Fourth Proportional to 10,115.70, 13,947.60 and 8,934.72

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Solution

The fourth proportional to 10,115.70, 13,947.60 and 8,934.72 is: 12,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.70 : 13,947.60 = 8,934.72 : x
  2. Step 2: Convert to fraction form
    10,115.70/13,947.60 = 8,934.72/x
  3. Step 3: Cross multiply
    10,115.70x = 13,947.60 × 8,934.72
  4. Step 4: Simplify right side
    10,115.70x = 124,617,900.67
  5. Step 5: Solve for x
    x = 124,617,900.67/10,115.70
  6. Step 6: Final answer
    x = 12,319.26

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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.