Home / 15,931.44-21,984.84-8,858.16

Finding the Fourth Proportional to 15,931.44, 21,984.84 and 8,858.16

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Solution

The fourth proportional to 15,931.44, 21,984.84 and 8,858.16 is: 12,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.44 : 21,984.84 = 8,858.16 : x
  2. Step 2: Convert to fraction form
    15,931.44/21,984.84 = 8,858.16/x
  3. Step 3: Cross multiply
    15,931.44x = 21,984.84 × 8,858.16
  4. Step 4: Simplify right side
    15,931.44x = 194,745,230.29
  5. Step 5: Solve for x
    x = 194,745,230.29/15,931.44
  6. Step 6: Final answer
    x = 12,223.96

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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.