Home / 28,227.12-38,955.72-15,651.60

Finding the Fourth Proportional to 28,227.12, 38,955.72 and 15,651.60

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Solution

The fourth proportional to 28,227.12, 38,955.72 and 15,651.60 is: 21,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.12 : 38,955.72 = 15,651.60 : x
  2. Step 2: Convert to fraction form
    28,227.12/38,955.72 = 15,651.60/x
  3. Step 3: Cross multiply
    28,227.12x = 38,955.72 × 15,651.60
  4. Step 4: Simplify right side
    28,227.12x = 609,719,347.15
  5. Step 5: Solve for x
    x = 609,719,347.15/28,227.12
  6. Step 6: Final answer
    x = 21,600.48

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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.