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Finding the Fourth Proportional to 15,089.08, 20,822.53 and 8,374.53

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Solution

The fourth proportional to 15,089.08, 20,822.53 and 8,374.53 is: 11,556.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.08 : 20,822.53 = 8,374.53 : x
  2. Step 2: Convert to fraction form
    15,089.08/20,822.53 = 8,374.53/x
  3. Step 3: Cross multiply
    15,089.08x = 20,822.53 × 8,374.53
  4. Step 4: Simplify right side
    15,089.08x = 174,378,865.52
  5. Step 5: Solve for x
    x = 174,378,865.52/15,089.08
  6. Step 6: Final answer
    x = 11,556.63

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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.