Home / 15,815.88-23,725.62-5,287.28

Finding the Fourth Proportional to 15,815.88, 23,725.62 and 5,287.28

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Solution

The fourth proportional to 15,815.88, 23,725.62 and 5,287.28 is: 7,931.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.88 : 23,725.62 = 5,287.28 : x
  2. Step 2: Convert to fraction form
    15,815.88/23,725.62 = 5,287.28/x
  3. Step 3: Cross multiply
    15,815.88x = 23,725.62 × 5,287.28
  4. Step 4: Simplify right side
    15,815.88x = 125,443,877.49
  5. Step 5: Solve for x
    x = 125,443,877.49/15,815.88
  6. Step 6: Final answer
    x = 7,931.51

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1.5x scale

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.