Home / 20,313.42-27,970.20-17,781.36

Finding the Fourth Proportional to 20,313.42, 27,970.20 and 17,781.36

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Solution

The fourth proportional to 20,313.42, 27,970.20 and 17,781.36 is: 24,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.42 : 27,970.20 = 17,781.36 : x
  2. Step 2: Convert to fraction form
    20,313.42/27,970.20 = 17,781.36/x
  3. Step 3: Cross multiply
    20,313.42x = 27,970.20 × 17,781.36
  4. Step 4: Simplify right side
    20,313.42x = 497,348,195.47
  5. Step 5: Solve for x
    x = 497,348,195.47/20,313.42
  6. Step 6: Final answer
    x = 24,483.73

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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.