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Finding the Fourth Proportional to 12,955.93, 19,390.11 and 8,029.72

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Solution

The fourth proportional to 12,955.93, 19,390.11 and 8,029.72 is: 12,017.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.93 : 19,390.11 = 8,029.72 : x
  2. Step 2: Convert to fraction form
    12,955.93/19,390.11 = 8,029.72/x
  3. Step 3: Cross multiply
    12,955.93x = 19,390.11 × 8,029.72
  4. Step 4: Simplify right side
    12,955.93x = 155,697,154.07
  5. Step 5: Solve for x
    x = 155,697,154.07/12,955.93
  6. Step 6: Final answer
    x = 12,017.44

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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.