Home / 15,274.08-21,078.72-8,560.80

Finding the Fourth Proportional to 15,274.08, 21,078.72 and 8,560.80

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Solution

The fourth proportional to 15,274.08, 21,078.72 and 8,560.80 is: 11,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.08 : 21,078.72 = 8,560.80 : x
  2. Step 2: Convert to fraction form
    15,274.08/21,078.72 = 8,560.80/x
  3. Step 3: Cross multiply
    15,274.08x = 21,078.72 × 8,560.80
  4. Step 4: Simplify right side
    15,274.08x = 180,450,706.18
  5. Step 5: Solve for x
    x = 180,450,706.18/15,274.08
  6. Step 6: Final answer
    x = 11,814.18

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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.