Home / 15,868.50-21,899.25-8,794.47

Finding the Fourth Proportional to 15,868.50, 21,899.25 and 8,794.47

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Solution

The fourth proportional to 15,868.50, 21,899.25 and 8,794.47 is: 12,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.50 : 21,899.25 = 8,794.47 : x
  2. Step 2: Convert to fraction form
    15,868.50/21,899.25 = 8,794.47/x
  3. Step 3: Cross multiply
    15,868.50x = 21,899.25 × 8,794.47
  4. Step 4: Simplify right side
    15,868.50x = 192,592,253.18
  5. Step 5: Solve for x
    x = 192,592,253.18/15,868.50
  6. Step 6: Final answer
    x = 12,136.76

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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.