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Finding the Fourth Proportional to 10,966.58, 15,004.19 and 10,920.11

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Solution

The fourth proportional to 10,966.58, 15,004.19 and 10,920.11 is: 14,940.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,966.58 : 15,004.19 = 10,920.11 : x
  2. Step 2: Convert to fraction form
    10,966.58/15,004.19 = 10,920.11/x
  3. Step 3: Cross multiply
    10,966.58x = 15,004.19 × 10,920.11
  4. Step 4: Simplify right side
    10,966.58x = 163,847,275.64
  5. Step 5: Solve for x
    x = 163,847,275.64/10,966.58
  6. Step 6: Final answer
    x = 14,940.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.