Home / 13,929.93-20,881.13-5,162.49

Finding the Fourth Proportional to 13,929.93, 20,881.13 and 5,162.49

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Solution

The fourth proportional to 13,929.93, 20,881.13 and 5,162.49 is: 7,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.93 : 20,881.13 = 5,162.49 : x
  2. Step 2: Convert to fraction form
    13,929.93/20,881.13 = 5,162.49/x
  3. Step 3: Cross multiply
    13,929.93x = 20,881.13 × 5,162.49
  4. Step 4: Simplify right side
    13,929.93x = 107,798,599.00
  5. Step 5: Solve for x
    x = 107,798,599.00/13,929.93
  6. Step 6: Final answer
    x = 7,738.63

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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.