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Finding the Fourth Proportional to 15,173.71, 20,939.65 and 8,801.59

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Solution

The fourth proportional to 15,173.71, 20,939.65 and 8,801.59 is: 12,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173.71 : 20,939.65 = 8,801.59 : x
  2. Step 2: Convert to fraction form
    15,173.71/20,939.65 = 8,801.59/x
  3. Step 3: Cross multiply
    15,173.71x = 20,939.65 × 8,801.59
  4. Step 4: Simplify right side
    15,173.71x = 184,302,139.69
  5. Step 5: Solve for x
    x = 184,302,139.69/15,173.71
  6. Step 6: Final answer
    x = 12,146.15

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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.