Home / 28,462.38-39,278.69-15,887.13

Finding the Fourth Proportional to 28,462.38, 39,278.69 and 15,887.13

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Solution

The fourth proportional to 28,462.38, 39,278.69 and 15,887.13 is: 21,924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.38 : 39,278.69 = 15,887.13 : x
  2. Step 2: Convert to fraction form
    28,462.38/39,278.69 = 15,887.13/x
  3. Step 3: Cross multiply
    28,462.38x = 39,278.69 × 15,887.13
  4. Step 4: Simplify right side
    28,462.38x = 624,025,654.26
  5. Step 5: Solve for x
    x = 624,025,654.26/28,462.38
  6. Step 6: Final answer
    x = 21,924.58

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Half scale
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Double scale
Find fourth proportional to 28,463.38, 39,280.07 and 15,888.13
Similar ratio
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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.