Home / 28,712.49-39,618.42-15,965.31

Finding the Fourth Proportional to 28,712.49, 39,618.42 and 15,965.31

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Solution

The fourth proportional to 28,712.49, 39,618.42 and 15,965.31 is: 22,029.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.49 : 39,618.42 = 15,965.31 : x
  2. Step 2: Convert to fraction form
    28,712.49/39,618.42 = 15,965.31/x
  3. Step 3: Cross multiply
    28,712.49x = 39,618.42 × 15,965.31
  4. Step 4: Simplify right side
    28,712.49x = 632,520,357.01
  5. Step 5: Solve for x
    x = 632,520,357.01/28,712.49
  6. Step 6: Final answer
    x = 22,029.45

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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.