Home / 28,086.12-38,758.50-15,510.60

Finding the Fourth Proportional to 28,086.12, 38,758.50 and 15,510.60

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Solution

The fourth proportional to 28,086.12, 38,758.50 and 15,510.60 is: 21,404.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.12 : 38,758.50 = 15,510.60 : x
  2. Step 2: Convert to fraction form
    28,086.12/38,758.50 = 15,510.60/x
  3. Step 3: Cross multiply
    28,086.12x = 38,758.50 × 15,510.60
  4. Step 4: Simplify right side
    28,086.12x = 601,167,590.10
  5. Step 5: Solve for x
    x = 601,167,590.10/28,086.12
  6. Step 6: Final answer
    x = 21,404.44

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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.