Home / 15,719.28-23,561.91-7,928.70

Finding the Fourth Proportional to 15,719.28, 23,561.91 and 7,928.70

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Solution

The fourth proportional to 15,719.28, 23,561.91 and 7,928.70 is: 11,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.28 : 23,561.91 = 7,928.70 : x
  2. Step 2: Convert to fraction form
    15,719.28/23,561.91 = 7,928.70/x
  3. Step 3: Cross multiply
    15,719.28x = 23,561.91 × 7,928.70
  4. Step 4: Simplify right side
    15,719.28x = 186,815,315.82
  5. Step 5: Solve for x
    x = 186,815,315.82/15,719.28
  6. Step 6: Final answer
    x = 11,884.47

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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.