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Finding the Fourth Proportional to 10,891.63, 15,050.88 and 8,901.46

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Solution

The fourth proportional to 10,891.63, 15,050.88 and 8,901.46 is: 12,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.63 : 15,050.88 = 8,901.46 : x
  2. Step 2: Convert to fraction form
    10,891.63/15,050.88 = 8,901.46/x
  3. Step 3: Cross multiply
    10,891.63x = 15,050.88 × 8,901.46
  4. Step 4: Simplify right side
    10,891.63x = 133,974,806.28
  5. Step 5: Solve for x
    x = 133,974,806.28/10,891.63
  6. Step 6: Final answer
    x = 12,300.71

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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.