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Finding the Fourth Proportional to 9,405.71, 14,118.79 and 7,072.40

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Solution

The fourth proportional to 9,405.71, 14,118.79 and 7,072.40 is: 10,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405.71 : 14,118.79 = 7,072.40 : x
  2. Step 2: Convert to fraction form
    9,405.71/14,118.79 = 7,072.40/x
  3. Step 3: Cross multiply
    9,405.71x = 14,118.79 × 7,072.40
  4. Step 4: Simplify right side
    9,405.71x = 99,853,730.40
  5. Step 5: Solve for x
    x = 99,853,730.40/9,405.71
  6. Step 6: Final answer
    x = 10,616.29

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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.