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Finding the Fourth Proportional to 15,104.94, 20,846.45 and 9,139.89

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Solution

The fourth proportional to 15,104.94, 20,846.45 and 9,139.89 is: 12,614.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.94 : 20,846.45 = 9,139.89 : x
  2. Step 2: Convert to fraction form
    15,104.94/20,846.45 = 9,139.89/x
  3. Step 3: Cross multiply
    15,104.94x = 20,846.45 × 9,139.89
  4. Step 4: Simplify right side
    15,104.94x = 190,534,259.89
  5. Step 5: Solve for x
    x = 190,534,259.89/15,104.94
  6. Step 6: Final answer
    x = 12,614.04

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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.