Home / 21,188.20-31,772.70-8,036.20

Finding the Fourth Proportional to 21,188.20, 31,772.70 and 8,036.20

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Solution

The fourth proportional to 21,188.20, 31,772.70 and 8,036.20 is: 12,050.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.20 : 31,772.70 = 8,036.20 : x
  2. Step 2: Convert to fraction form
    21,188.20/31,772.70 = 8,036.20/x
  3. Step 3: Cross multiply
    21,188.20x = 31,772.70 × 8,036.20
  4. Step 4: Simplify right side
    21,188.20x = 255,331,771.74
  5. Step 5: Solve for x
    x = 255,331,771.74/21,188.20
  6. Step 6: Final answer
    x = 12,050.66

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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.