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Finding the Fourth Proportional to 15,841.77, 21,864.09 and 9,035.80

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Solution

The fourth proportional to 15,841.77, 21,864.09 and 9,035.80 is: 12,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.77 : 21,864.09 = 9,035.80 : x
  2. Step 2: Convert to fraction form
    15,841.77/21,864.09 = 9,035.80/x
  3. Step 3: Cross multiply
    15,841.77x = 21,864.09 × 9,035.80
  4. Step 4: Simplify right side
    15,841.77x = 197,559,544.42
  5. Step 5: Solve for x
    x = 197,559,544.42/15,841.77
  6. Step 6: Final answer
    x = 12,470.80

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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.