Home / 28,108.80-38,774.40-16,775.04

Finding the Fourth Proportional to 28,108.80, 38,774.40 and 16,775.04

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Solution

The fourth proportional to 28,108.80, 38,774.40 and 16,775.04 is: 23,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.80 : 38,774.40 = 16,775.04 : x
  2. Step 2: Convert to fraction form
    28,108.80/38,774.40 = 16,775.04/x
  3. Step 3: Cross multiply
    28,108.80x = 38,774.40 × 16,775.04
  4. Step 4: Simplify right side
    28,108.80x = 650,442,110.98
  5. Step 5: Solve for x
    x = 650,442,110.98/28,108.80
  6. Step 6: Final answer
    x = 23,140.16

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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.