Home / 15,494.78-21,384.60-9,207.15

Finding the Fourth Proportional to 15,494.78, 21,384.60 and 9,207.15

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Solution

The fourth proportional to 15,494.78, 21,384.60 and 9,207.15 is: 12,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,494.78 : 21,384.60 = 9,207.15 : x
  2. Step 2: Convert to fraction form
    15,494.78/21,384.60 = 9,207.15/x
  3. Step 3: Cross multiply
    15,494.78x = 21,384.60 × 9,207.15
  4. Step 4: Simplify right side
    15,494.78x = 196,891,219.89
  5. Step 5: Solve for x
    x = 196,891,219.89/15,494.78
  6. Step 6: Final answer
    x = 12,706.94

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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.