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Finding the Fourth Proportional to 15,099.59, 20,834.07 and 9,131.13

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Solution

The fourth proportional to 15,099.59, 20,834.07 and 9,131.13 is: 12,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.59 : 20,834.07 = 9,131.13 : x
  2. Step 2: Convert to fraction form
    15,099.59/20,834.07 = 9,131.13/x
  3. Step 3: Cross multiply
    15,099.59x = 20,834.07 × 9,131.13
  4. Step 4: Simplify right side
    15,099.59x = 190,238,601.60
  5. Step 5: Solve for x
    x = 190,238,601.60/15,099.59
  6. Step 6: Final answer
    x = 12,598.93

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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.