Home / 28,286.16-39,036.24-15,710.96

Finding the Fourth Proportional to 28,286.16, 39,036.24 and 15,710.96

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Solution

The fourth proportional to 28,286.16, 39,036.24 and 15,710.96 is: 21,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.16 : 39,036.24 = 15,710.96 : x
  2. Step 2: Convert to fraction form
    28,286.16/39,036.24 = 15,710.96/x
  3. Step 3: Cross multiply
    28,286.16x = 39,036.24 × 15,710.96
  4. Step 4: Simplify right side
    28,286.16x = 613,296,805.19
  5. Step 5: Solve for x
    x = 613,296,805.19/28,286.16
  6. Step 6: Final answer
    x = 21,681.87

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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.