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Finding the Fourth Proportional to 9,908.76, 14,774.55 and 9,636.60

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Solution

The fourth proportional to 9,908.76, 14,774.55 and 9,636.60 is: 14,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.76 : 14,774.55 = 9,636.60 : x
  2. Step 2: Convert to fraction form
    9,908.76/14,774.55 = 9,636.60/x
  3. Step 3: Cross multiply
    9,908.76x = 14,774.55 × 9,636.60
  4. Step 4: Simplify right side
    9,908.76x = 142,376,428.53
  5. Step 5: Solve for x
    x = 142,376,428.53/9,908.76
  6. Step 6: Final answer
    x = 14,368.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.