Home / 28,179.23-38,887.77-15,432.18

Finding the Fourth Proportional to 28,179.23, 38,887.77 and 15,432.18

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Solution

The fourth proportional to 28,179.23, 38,887.77 and 15,432.18 is: 21,296.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.23 : 38,887.77 = 15,432.18 : x
  2. Step 2: Convert to fraction form
    28,179.23/38,887.77 = 15,432.18/x
  3. Step 3: Cross multiply
    28,179.23x = 38,887.77 × 15,432.18
  4. Step 4: Simplify right side
    28,179.23x = 600,122,872.00
  5. Step 5: Solve for x
    x = 600,122,872.00/28,179.23
  6. Step 6: Final answer
    x = 21,296.64

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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.