Home / 15,918.62-23,880.50-5,389.28

Finding the Fourth Proportional to 15,918.62, 23,880.50 and 5,389.28

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Solution

The fourth proportional to 15,918.62, 23,880.50 and 5,389.28 is: 8,084.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.62 : 23,880.50 = 5,389.28 : x
  2. Step 2: Convert to fraction form
    15,918.62/23,880.50 = 5,389.28/x
  3. Step 3: Cross multiply
    15,918.62x = 23,880.50 × 5,389.28
  4. Step 4: Simplify right side
    15,918.62x = 128,698,701.04
  5. Step 5: Solve for x
    x = 128,698,701.04/15,918.62
  6. Step 6: Final answer
    x = 8,084.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.