Home / 28,636.55-39,518.66-15,889.79

Finding the Fourth Proportional to 28,636.55, 39,518.66 and 15,889.79

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Solution

The fourth proportional to 28,636.55, 39,518.66 and 15,889.79 is: 21,928.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.55 : 39,518.66 = 15,889.79 : x
  2. Step 2: Convert to fraction form
    28,636.55/39,518.66 = 15,889.79/x
  3. Step 3: Cross multiply
    28,636.55x = 39,518.66 × 15,889.79
  4. Step 4: Simplify right side
    28,636.55x = 627,943,080.02
  5. Step 5: Solve for x
    x = 627,943,080.02/28,636.55
  6. Step 6: Final answer
    x = 21,928.02

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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.