Home / 15,761.39-21,750.72-8,591.32

Finding the Fourth Proportional to 15,761.39, 21,750.72 and 8,591.32

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Solution

The fourth proportional to 15,761.39, 21,750.72 and 8,591.32 is: 11,856.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,761.39 : 21,750.72 = 8,591.32 : x
  2. Step 2: Convert to fraction form
    15,761.39/21,750.72 = 8,591.32/x
  3. Step 3: Cross multiply
    15,761.39x = 21,750.72 × 8,591.32
  4. Step 4: Simplify right side
    15,761.39x = 186,867,244.04
  5. Step 5: Solve for x
    x = 186,867,244.04/15,761.39
  6. Step 6: Final answer
    x = 11,856.01

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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.