Home / 28,291.59-39,042.32-15,716.25

Finding the Fourth Proportional to 28,291.59, 39,042.32 and 15,716.25

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Solution

The fourth proportional to 28,291.59, 39,042.32 and 15,716.25 is: 21,688.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.59 : 39,042.32 = 15,716.25 : x
  2. Step 2: Convert to fraction form
    28,291.59/39,042.32 = 15,716.25/x
  3. Step 3: Cross multiply
    28,291.59x = 39,042.32 × 15,716.25
  4. Step 4: Simplify right side
    28,291.59x = 613,598,783.12
  5. Step 5: Solve for x
    x = 613,598,783.12/28,291.59
  6. Step 6: Final answer
    x = 21,688.38

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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.