Home / 14,749.74-20,356.29-8,781.42

Finding the Fourth Proportional to 14,749.74, 20,356.29 and 8,781.42

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Solution

The fourth proportional to 14,749.74, 20,356.29 and 8,781.42 is: 12,119.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,749.74 : 20,356.29 = 8,781.42 : x
  2. Step 2: Convert to fraction form
    14,749.74/20,356.29 = 8,781.42/x
  3. Step 3: Cross multiply
    14,749.74x = 20,356.29 × 8,781.42
  4. Step 4: Simplify right side
    14,749.74x = 178,757,132.13
  5. Step 5: Solve for x
    x = 178,757,132.13/14,749.74
  6. Step 6: Final answer
    x = 12,119.34

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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.