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Finding the Fourth Proportional to 11,363.71, 15,681.94 and 6,328.90

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Solution

The fourth proportional to 11,363.71, 15,681.94 and 6,328.90 is: 8,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,363.71 : 15,681.94 = 6,328.90 : x
  2. Step 2: Convert to fraction form
    11,363.71/15,681.94 = 6,328.90/x
  3. Step 3: Cross multiply
    11,363.71x = 15,681.94 × 6,328.90
  4. Step 4: Simplify right side
    11,363.71x = 99,249,375.04
  5. Step 5: Solve for x
    x = 99,249,375.04/11,363.71
  6. Step 6: Final answer
    x = 8,733.89

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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.