Home / 20,963.83-31,445.77-5,381.46

Finding the Fourth Proportional to 20,963.83, 31,445.77 and 5,381.46

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Solution

The fourth proportional to 20,963.83, 31,445.77 and 5,381.46 is: 8,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.83 : 31,445.77 = 5,381.46 : x
  2. Step 2: Convert to fraction form
    20,963.83/31,445.77 = 5,381.46/x
  3. Step 3: Cross multiply
    20,963.83x = 31,445.77 × 5,381.46
  4. Step 4: Simplify right side
    20,963.83x = 169,224,153.42
  5. Step 5: Solve for x
    x = 169,224,153.42/20,963.83
  6. Step 6: Final answer
    x = 8,072.20

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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.