Home / 28,463.25-39,279.33-15,888

Finding the Fourth Proportional to 28,463.25, 39,279.33 and 15,888

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Solution

The fourth proportional to 28,463.25, 39,279.33 and 15,888 is: 21,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,463.25 : 39,279.33 = 15,888 : x
  2. Step 2: Convert to fraction form
    28,463.25/39,279.33 = 15,888/x
  3. Step 3: Cross multiply
    28,463.25x = 39,279.33 × 15,888
  4. Step 4: Simplify right side
    28,463.25x = 624,069,995.04
  5. Step 5: Solve for x
    x = 624,069,995.04/28,463.25
  6. Step 6: Final answer
    x = 21,925.47

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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.