Home / 15,414.09-21,271.36-8,701.90

Finding the Fourth Proportional to 15,414.09, 21,271.36 and 8,701.90

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Solution

The fourth proportional to 15,414.09, 21,271.36 and 8,701.90 is: 12,008.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,414.09 : 21,271.36 = 8,701.90 : x
  2. Step 2: Convert to fraction form
    15,414.09/21,271.36 = 8,701.90/x
  3. Step 3: Cross multiply
    15,414.09x = 21,271.36 × 8,701.90
  4. Step 4: Simplify right side
    15,414.09x = 185,101,172.65
  5. Step 5: Solve for x
    x = 185,101,172.65/15,414.09
  6. Step 6: Final answer
    x = 12,008.57

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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.