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Finding the Fourth Proportional to 15,836.84, 21,861.84 and 9,465.68

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Solution

The fourth proportional to 15,836.84, 21,861.84 and 9,465.68 is: 13,066.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,836.84 : 21,861.84 = 9,465.68 : x
  2. Step 2: Convert to fraction form
    15,836.84/21,861.84 = 9,465.68/x
  3. Step 3: Cross multiply
    15,836.84x = 21,861.84 × 9,465.68
  4. Step 4: Simplify right side
    15,836.84x = 206,937,181.65
  5. Step 5: Solve for x
    x = 206,937,181.65/15,836.84
  6. Step 6: Final answer
    x = 13,066.82

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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.