Home / 28,187.75-38,897.72-15,441.00

Finding the Fourth Proportional to 28,187.75, 38,897.72 and 15,441.00

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Solution

The fourth proportional to 28,187.75, 38,897.72 and 15,441.00 is: 21,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.75 : 38,897.72 = 15,441.00 : x
  2. Step 2: Convert to fraction form
    28,187.75/38,897.72 = 15,441.00/x
  3. Step 3: Cross multiply
    28,187.75x = 38,897.72 × 15,441.00
  4. Step 4: Simplify right side
    28,187.75x = 600,619,857.55
  5. Step 5: Solve for x
    x = 600,619,857.55/28,187.75
  6. Step 6: Final answer
    x = 21,307.83

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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.