Home / 15,274.80-21,078.23-8,560.35

Finding the Fourth Proportional to 15,274.80, 21,078.23 and 8,560.35

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Solution

The fourth proportional to 15,274.80, 21,078.23 and 8,560.35 is: 11,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,274.80 : 21,078.23 = 8,560.35 : x
  2. Step 2: Convert to fraction form
    15,274.80/21,078.23 = 8,560.35/x
  3. Step 3: Cross multiply
    15,274.80x = 21,078.23 × 8,560.35
  4. Step 4: Simplify right side
    15,274.80x = 180,436,983.38
  5. Step 5: Solve for x
    x = 180,436,983.38/15,274.80
  6. Step 6: Final answer
    x = 11,812.72

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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.