Home / 20,218.47-30,333.57-8,370.06

Finding the Fourth Proportional to 20,218.47, 30,333.57 and 8,370.06

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Solution

The fourth proportional to 20,218.47, 30,333.57 and 8,370.06 is: 12,557.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.47 : 30,333.57 = 8,370.06 : x
  2. Step 2: Convert to fraction form
    20,218.47/30,333.57 = 8,370.06/x
  3. Step 3: Cross multiply
    20,218.47x = 30,333.57 × 8,370.06
  4. Step 4: Simplify right side
    20,218.47x = 253,893,800.91
  5. Step 5: Solve for x
    x = 253,893,800.91/20,218.47
  6. Step 6: Final answer
    x = 12,557.52

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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.