Home / 15,928.53-21,980.89-8,758.43

Finding the Fourth Proportional to 15,928.53, 21,980.89 and 8,758.43

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Solution

The fourth proportional to 15,928.53, 21,980.89 and 8,758.43 is: 12,086.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.53 : 21,980.89 = 8,758.43 : x
  2. Step 2: Convert to fraction form
    15,928.53/21,980.89 = 8,758.43/x
  3. Step 3: Cross multiply
    15,928.53x = 21,980.89 × 8,758.43
  4. Step 4: Simplify right side
    15,928.53x = 192,518,119.46
  5. Step 5: Solve for x
    x = 192,518,119.46/15,928.53
  6. Step 6: Final answer
    x = 12,086.37

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1.5x scale

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.