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Finding the Fourth Proportional to 12,927.29, 19,391.04 and 7,080.71

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Solution

The fourth proportional to 12,927.29, 19,391.04 and 7,080.71 is: 10,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.29 : 19,391.04 = 7,080.71 : x
  2. Step 2: Convert to fraction form
    12,927.29/19,391.04 = 7,080.71/x
  3. Step 3: Cross multiply
    12,927.29x = 19,391.04 × 7,080.71
  4. Step 4: Simplify right side
    12,927.29x = 137,302,330.84
  5. Step 5: Solve for x
    x = 137,302,330.84/12,927.29
  6. Step 6: Final answer
    x = 10,621.12

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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.