Home / 21,589.65-29,793.69-12,158.28

Finding the Fourth Proportional to 21,589.65, 29,793.69 and 12,158.28

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Solution

The fourth proportional to 21,589.65, 29,793.69 and 12,158.28 is: 16,778.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.65 : 29,793.69 = 12,158.28 : x
  2. Step 2: Convert to fraction form
    21,589.65/29,793.69 = 12,158.28/x
  3. Step 3: Cross multiply
    21,589.65x = 29,793.69 × 12,158.28
  4. Step 4: Simplify right side
    21,589.65x = 362,240,025.25
  5. Step 5: Solve for x
    x = 362,240,025.25/21,589.65
  6. Step 6: Final answer
    x = 16,778.41

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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.