Home / 20,818.00-31,215.05-8,152.93

Finding the Fourth Proportional to 20,818.00, 31,215.05 and 8,152.93

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Solution

The fourth proportional to 20,818.00, 31,215.05 and 8,152.93 is: 12,224.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.00 : 31,215.05 = 8,152.93 : x
  2. Step 2: Convert to fraction form
    20,818.00/31,215.05 = 8,152.93/x
  3. Step 3: Cross multiply
    20,818.00x = 31,215.05 × 8,152.93
  4. Step 4: Simplify right side
    20,818.00x = 254,494,146.42
  5. Step 5: Solve for x
    x = 254,494,146.42/20,818.00
  6. Step 6: Final answer
    x = 12,224.72

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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.