Home / 20,595.28-28,422.71-11,643.61

Finding the Fourth Proportional to 20,595.28, 28,422.71 and 11,643.61

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Solution

The fourth proportional to 20,595.28, 28,422.71 and 11,643.61 is: 16,068.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.28 : 28,422.71 = 11,643.61 : x
  2. Step 2: Convert to fraction form
    20,595.28/28,422.71 = 11,643.61/x
  3. Step 3: Cross multiply
    20,595.28x = 28,422.71 × 11,643.61
  4. Step 4: Simplify right side
    20,595.28x = 330,942,750.05
  5. Step 5: Solve for x
    x = 330,942,750.05/20,595.28
  6. Step 6: Final answer
    x = 16,068.87

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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.