Home / 31,621.46-43,652.86-20,307.84

Finding the Fourth Proportional to 31,621.46, 43,652.86 and 20,307.84

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Solution

The fourth proportional to 31,621.46, 43,652.86 and 20,307.84 is: 28,034.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.46 : 43,652.86 = 20,307.84 : x
  2. Step 2: Convert to fraction form
    31,621.46/43,652.86 = 20,307.84/x
  3. Step 3: Cross multiply
    31,621.46x = 43,652.86 × 20,307.84
  4. Step 4: Simplify right side
    31,621.46x = 886,495,296.42
  5. Step 5: Solve for x
    x = 886,495,296.42/31,621.46
  6. Step 6: Final answer
    x = 28,034.61

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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.