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Finding the Fourth Proportional to 15,098.90, 20,836.28 and 8,384.52

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Solution

The fourth proportional to 15,098.90, 20,836.28 and 8,384.52 is: 11,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,098.90 : 20,836.28 = 8,384.52 : x
  2. Step 2: Convert to fraction form
    15,098.90/20,836.28 = 8,384.52/x
  3. Step 3: Cross multiply
    15,098.90x = 20,836.28 × 8,384.52
  4. Step 4: Simplify right side
    15,098.90x = 174,702,206.39
  5. Step 5: Solve for x
    x = 174,702,206.39/15,098.90
  6. Step 6: Final answer
    x = 11,570.53

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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.