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Finding the Fourth Proportional to 15,521, 23,291.74 and 7,313.64

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Solution

The fourth proportional to 15,521, 23,291.74 and 7,313.64 is: 10,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521 : 23,291.74 = 7,313.64 : x
  2. Step 2: Convert to fraction form
    15,521/23,291.74 = 7,313.64/x
  3. Step 3: Cross multiply
    15,521x = 23,291.74 × 7,313.64
  4. Step 4: Simplify right side
    15,521x = 170,347,401.33
  5. Step 5: Solve for x
    x = 170,347,401.33/15,521
  6. Step 6: Final answer
    x = 10,975.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.