Home / 28,398.17-39,187.87-15,651.31

Finding the Fourth Proportional to 28,398.17, 39,187.87 and 15,651.31

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Solution

The fourth proportional to 28,398.17, 39,187.87 and 15,651.31 is: 21,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.17 : 39,187.87 = 15,651.31 : x
  2. Step 2: Convert to fraction form
    28,398.17/39,187.87 = 15,651.31/x
  3. Step 3: Cross multiply
    28,398.17x = 39,187.87 × 15,651.31
  4. Step 4: Simplify right side
    28,398.17x = 613,341,643.58
  5. Step 5: Solve for x
    x = 613,341,643.58/28,398.17
  6. Step 6: Final answer
    x = 21,597.93

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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.