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Finding the Fourth Proportional to 15,086.60, 20,810.05 and 9,716.00

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Solution

The fourth proportional to 15,086.60, 20,810.05 and 9,716.00 is: 13,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.60 : 20,810.05 = 9,716.00 : x
  2. Step 2: Convert to fraction form
    15,086.60/20,810.05 = 9,716.00/x
  3. Step 3: Cross multiply
    15,086.60x = 20,810.05 × 9,716.00
  4. Step 4: Simplify right side
    15,086.60x = 202,190,293.17
  5. Step 5: Solve for x
    x = 202,190,293.17/15,086.60
  6. Step 6: Final answer
    x = 13,401.98

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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.