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Finding the Fourth Proportional to 11,101.81, 15,320.71 and 6,624.71

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Solution

The fourth proportional to 11,101.81, 15,320.71 and 6,624.71 is: 9,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.81 : 15,320.71 = 6,624.71 : x
  2. Step 2: Convert to fraction form
    11,101.81/15,320.71 = 6,624.71/x
  3. Step 3: Cross multiply
    11,101.81x = 15,320.71 × 6,624.71
  4. Step 4: Simplify right side
    11,101.81x = 101,495,260.74
  5. Step 5: Solve for x
    x = 101,495,260.74/11,101.81
  6. Step 6: Final answer
    x = 9,142.23

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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.