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Finding the Fourth Proportional to 15,140.01, 20,893.10 and 8,426.06

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Solution

The fourth proportional to 15,140.01, 20,893.10 and 8,426.06 is: 11,627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.01 : 20,893.10 = 8,426.06 : x
  2. Step 2: Convert to fraction form
    15,140.01/20,893.10 = 8,426.06/x
  3. Step 3: Cross multiply
    15,140.01x = 20,893.10 × 8,426.06
  4. Step 4: Simplify right side
    15,140.01x = 176,046,367.59
  5. Step 5: Solve for x
    x = 176,046,367.59/15,140.01
  6. Step 6: Final answer
    x = 11,627.89

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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.