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Finding the Fourth Proportional to 15,298.86, 21,110.70 and 8,583.12

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Solution

The fourth proportional to 15,298.86, 21,110.70 and 8,583.12 is: 11,843.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298.86 : 21,110.70 = 8,583.12 : x
  2. Step 2: Convert to fraction form
    15,298.86/21,110.70 = 8,583.12/x
  3. Step 3: Cross multiply
    15,298.86x = 21,110.70 × 8,583.12
  4. Step 4: Simplify right side
    15,298.86x = 181,195,671.38
  5. Step 5: Solve for x
    x = 181,195,671.38/15,298.86
  6. Step 6: Final answer
    x = 11,843.74

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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.