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Finding the Fourth Proportional to 10,396.84, 15,600.66 and 7,947.40

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Solution

The fourth proportional to 10,396.84, 15,600.66 and 7,947.40 is: 11,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,396.84 : 15,600.66 = 7,947.40 : x
  2. Step 2: Convert to fraction form
    10,396.84/15,600.66 = 7,947.40/x
  3. Step 3: Cross multiply
    10,396.84x = 15,600.66 × 7,947.40
  4. Step 4: Simplify right side
    10,396.84x = 123,984,685.28
  5. Step 5: Solve for x
    x = 123,984,685.28/10,396.84
  6. Step 6: Final answer
    x = 11,925.23

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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.