Home / 22,911.77-31,542.13-20,549.81

Finding the Fourth Proportional to 22,911.77, 31,542.13 and 20,549.81

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Solution

The fourth proportional to 22,911.77, 31,542.13 and 20,549.81 is: 28,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.77 : 31,542.13 = 20,549.81 : x
  2. Step 2: Convert to fraction form
    22,911.77/31,542.13 = 20,549.81/x
  3. Step 3: Cross multiply
    22,911.77x = 31,542.13 × 20,549.81
  4. Step 4: Simplify right side
    22,911.77x = 648,184,778.50
  5. Step 5: Solve for x
    x = 648,184,778.50/22,911.77
  6. Step 6: Final answer
    x = 28,290.47

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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.