Home / 28,329.56-39,095.52-15,755.12

Finding the Fourth Proportional to 28,329.56, 39,095.52 and 15,755.12

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Solution

The fourth proportional to 28,329.56, 39,095.52 and 15,755.12 is: 21,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.56 : 39,095.52 = 15,755.12 : x
  2. Step 2: Convert to fraction form
    28,329.56/39,095.52 = 15,755.12/x
  3. Step 3: Cross multiply
    28,329.56x = 39,095.52 × 15,755.12
  4. Step 4: Simplify right side
    28,329.56x = 615,954,609.06
  5. Step 5: Solve for x
    x = 615,954,609.06/28,329.56
  6. Step 6: Final answer
    x = 21,742.47

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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.