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Finding the Fourth Proportional to 15,080.92, 20,810.73 and 9,109.06

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Solution

The fourth proportional to 15,080.92, 20,810.73 and 9,109.06 is: 12,569.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.92 : 20,810.73 = 9,109.06 : x
  2. Step 2: Convert to fraction form
    15,080.92/20,810.73 = 9,109.06/x
  3. Step 3: Cross multiply
    15,080.92x = 20,810.73 × 9,109.06
  4. Step 4: Simplify right side
    15,080.92x = 189,566,188.21
  5. Step 5: Solve for x
    x = 189,566,188.21/15,080.92
  6. Step 6: Final answer
    x = 12,569.94

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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.