Home / 15,868.76-21,898.08-8,795.03

Finding the Fourth Proportional to 15,868.76, 21,898.08 and 8,795.03

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Solution

The fourth proportional to 15,868.76, 21,898.08 and 8,795.03 is: 12,136.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.76 : 21,898.08 = 8,795.03 : x
  2. Step 2: Convert to fraction form
    15,868.76/21,898.08 = 8,795.03/x
  3. Step 3: Cross multiply
    15,868.76x = 21,898.08 × 8,795.03
  4. Step 4: Simplify right side
    15,868.76x = 192,594,161.05
  5. Step 5: Solve for x
    x = 192,594,161.05/15,868.76
  6. Step 6: Final answer
    x = 12,136.69

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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.