Home / 15,931.44-21,984.66-8,857.80

Finding the Fourth Proportional to 15,931.44, 21,984.66 and 8,857.80

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Solution

The fourth proportional to 15,931.44, 21,984.66 and 8,857.80 is: 12,223.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.44 : 21,984.66 = 8,857.80 : x
  2. Step 2: Convert to fraction form
    15,931.44/21,984.66 = 8,857.80/x
  3. Step 3: Cross multiply
    15,931.44x = 21,984.66 × 8,857.80
  4. Step 4: Simplify right side
    15,931.44x = 194,735,721.35
  5. Step 5: Solve for x
    x = 194,735,721.35/15,931.44
  6. Step 6: Final answer
    x = 12,223.36

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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.