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Finding the Fourth Proportional to 15,099.81, 20,813.49 and 10,253.02

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Solution

The fourth proportional to 15,099.81, 20,813.49 and 10,253.02 is: 14,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.81 : 20,813.49 = 10,253.02 : x
  2. Step 2: Convert to fraction form
    15,099.81/20,813.49 = 10,253.02/x
  3. Step 3: Cross multiply
    15,099.81x = 20,813.49 × 10,253.02
  4. Step 4: Simplify right side
    15,099.81x = 213,401,129.24
  5. Step 5: Solve for x
    x = 213,401,129.24/15,099.81
  6. Step 6: Final answer
    x = 14,132.70

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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.