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Finding the Fourth Proportional to 15,095.39, 20,825.15 and 9,123.59

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Solution

The fourth proportional to 15,095.39, 20,825.15 and 9,123.59 is: 12,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.39 : 20,825.15 = 9,123.59 : x
  2. Step 2: Convert to fraction form
    15,095.39/20,825.15 = 9,123.59/x
  3. Step 3: Cross multiply
    15,095.39x = 20,825.15 × 9,123.59
  4. Step 4: Simplify right side
    15,095.39x = 189,999,980.54
  5. Step 5: Solve for x
    x = 189,999,980.54/15,095.39
  6. Step 6: Final answer
    x = 12,586.63

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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.