Home / 15,721.28-23,583.58-5,188.22

Finding the Fourth Proportional to 15,721.28, 23,583.58 and 5,188.22

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Solution

The fourth proportional to 15,721.28, 23,583.58 and 5,188.22 is: 7,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.28 : 23,583.58 = 5,188.22 : x
  2. Step 2: Convert to fraction form
    15,721.28/23,583.58 = 5,188.22/x
  3. Step 3: Cross multiply
    15,721.28x = 23,583.58 × 5,188.22
  4. Step 4: Simplify right side
    15,721.28x = 122,356,801.43
  5. Step 5: Solve for x
    x = 122,356,801.43/15,721.28
  6. Step 6: Final answer
    x = 7,782.88

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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.