Home / 13,809.05-20,693.09-10,143.13

Finding the Fourth Proportional to 13,809.05, 20,693.09 and 10,143.13

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Solution

The fourth proportional to 13,809.05, 20,693.09 and 10,143.13 is: 15,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.05 : 20,693.09 = 10,143.13 : x
  2. Step 2: Convert to fraction form
    13,809.05/20,693.09 = 10,143.13/x
  3. Step 3: Cross multiply
    13,809.05x = 20,693.09 × 10,143.13
  4. Step 4: Simplify right side
    13,809.05x = 209,892,701.97
  5. Step 5: Solve for x
    x = 209,892,701.97/13,809.05
  6. Step 6: Final answer
    x = 15,199.65

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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.