Home / 15,513.40-23,270.10-11,139.40

Finding the Fourth Proportional to 15,513.40, 23,270.10 and 11,139.40

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Solution

The fourth proportional to 15,513.40, 23,270.10 and 11,139.40 is: 16,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.40 : 23,270.10 = 11,139.40 : x
  2. Step 2: Convert to fraction form
    15,513.40/23,270.10 = 11,139.40/x
  3. Step 3: Cross multiply
    15,513.40x = 23,270.10 × 11,139.40
  4. Step 4: Simplify right side
    15,513.40x = 259,214,951.94
  5. Step 5: Solve for x
    x = 259,214,951.94/15,513.40
  6. Step 6: Final answer
    x = 16,709.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.