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Finding the Fourth Proportional to 15,775.16, 21,768.84 and 9,060.62

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Solution

The fourth proportional to 15,775.16, 21,768.84 and 9,060.62 is: 12,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.16 : 21,768.84 = 9,060.62 : x
  2. Step 2: Convert to fraction form
    15,775.16/21,768.84 = 9,060.62/x
  3. Step 3: Cross multiply
    15,775.16x = 21,768.84 × 9,060.62
  4. Step 4: Simplify right side
    15,775.16x = 197,239,078.24
  5. Step 5: Solve for x
    x = 197,239,078.24/15,775.16
  6. Step 6: Final answer
    x = 12,503.15

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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.