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Finding the Fourth Proportional to 15,095.89, 20,825.84 and 9,124.09

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Solution

The fourth proportional to 15,095.89, 20,825.84 and 9,124.09 is: 12,587.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.89 : 20,825.84 = 9,124.09 : x
  2. Step 2: Convert to fraction form
    15,095.89/20,825.84 = 9,124.09/x
  3. Step 3: Cross multiply
    15,095.89x = 20,825.84 × 9,124.09
  4. Step 4: Simplify right side
    15,095.89x = 190,016,688.74
  5. Step 5: Solve for x
    x = 190,016,688.74/15,095.89
  6. Step 6: Final answer
    x = 12,587.32

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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.