Home / 15,442.61-21,310.81-8,369.03

Finding the Fourth Proportional to 15,442.61, 21,310.81 and 8,369.03

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Solution

The fourth proportional to 15,442.61, 21,310.81 and 8,369.03 is: 11,549.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.61 : 21,310.81 = 8,369.03 : x
  2. Step 2: Convert to fraction form
    15,442.61/21,310.81 = 8,369.03/x
  3. Step 3: Cross multiply
    15,442.61x = 21,310.81 × 8,369.03
  4. Step 4: Simplify right side
    15,442.61x = 178,350,767.77
  5. Step 5: Solve for x
    x = 178,350,767.77/15,442.61
  6. Step 6: Final answer
    x = 11,549.27

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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.