Home / 28,309.47-39,067.55-15,563.19

Finding the Fourth Proportional to 28,309.47, 39,067.55 and 15,563.19

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Solution

The fourth proportional to 28,309.47, 39,067.55 and 15,563.19 is: 21,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.47 : 39,067.55 = 15,563.19 : x
  2. Step 2: Convert to fraction form
    28,309.47/39,067.55 = 15,563.19/x
  3. Step 3: Cross multiply
    28,309.47x = 39,067.55 × 15,563.19
  4. Step 4: Simplify right side
    28,309.47x = 608,015,703.48
  5. Step 5: Solve for x
    x = 608,015,703.48/28,309.47
  6. Step 6: Final answer
    x = 21,477.47

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Half scale
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Double scale
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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.