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Finding the Fourth Proportional to 9,856.68, 14,772.60 and 8,621.16

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Solution

The fourth proportional to 9,856.68, 14,772.60 and 8,621.16 is: 12,920.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,856.68 : 14,772.60 = 8,621.16 : x
  2. Step 2: Convert to fraction form
    9,856.68/14,772.60 = 8,621.16/x
  3. Step 3: Cross multiply
    9,856.68x = 14,772.60 × 8,621.16
  4. Step 4: Simplify right side
    9,856.68x = 127,356,948.22
  5. Step 5: Solve for x
    x = 127,356,948.22/9,856.68
  6. Step 6: Final answer
    x = 12,920.88

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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.