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Finding the Fourth Proportional to 15,777.66, 21,772.85 and 9,063.11

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Solution

The fourth proportional to 15,777.66, 21,772.85 and 9,063.11 is: 12,506.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.66 : 21,772.85 = 9,063.11 : x
  2. Step 2: Convert to fraction form
    15,777.66/21,772.85 = 9,063.11/x
  3. Step 3: Cross multiply
    15,777.66x = 21,772.85 × 9,063.11
  4. Step 4: Simplify right side
    15,777.66x = 197,329,689.25
  5. Step 5: Solve for x
    x = 197,329,689.25/15,777.66
  6. Step 6: Final answer
    x = 12,506.91

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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.