Home / 28,299.57-39,053.31-15,724.32

Finding the Fourth Proportional to 28,299.57, 39,053.31 and 15,724.32

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Solution

The fourth proportional to 28,299.57, 39,053.31 and 15,724.32 is: 21,699.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.57 : 39,053.31 = 15,724.32 : x
  2. Step 2: Convert to fraction form
    28,299.57/39,053.31 = 15,724.32/x
  3. Step 3: Cross multiply
    28,299.57x = 39,053.31 × 15,724.32
  4. Step 4: Simplify right side
    28,299.57x = 614,086,743.50
  5. Step 5: Solve for x
    x = 614,086,743.50/28,299.57
  6. Step 6: Final answer
    x = 21,699.51

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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.