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Finding the Fourth Proportional to 15,020.70, 20,733.03 and 9,715.38

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Solution

The fourth proportional to 15,020.70, 20,733.03 and 9,715.38 is: 13,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,020.70 : 20,733.03 = 9,715.38 : x
  2. Step 2: Convert to fraction form
    15,020.70/20,733.03 = 9,715.38/x
  3. Step 3: Cross multiply
    15,020.70x = 20,733.03 × 9,715.38
  4. Step 4: Simplify right side
    15,020.70x = 201,429,265.00
  5. Step 5: Solve for x
    x = 201,429,265.00/15,020.70
  6. Step 6: Final answer
    x = 13,410.11

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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.