Home / 21,210.20-31,805.70-8,058.20

Finding the Fourth Proportional to 21,210.20, 31,805.70 and 8,058.20

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Solution

The fourth proportional to 21,210.20, 31,805.70 and 8,058.20 is: 12,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.20 : 31,805.70 = 8,058.20 : x
  2. Step 2: Convert to fraction form
    21,210.20/31,805.70 = 8,058.20/x
  3. Step 3: Cross multiply
    21,210.20x = 31,805.70 × 8,058.20
  4. Step 4: Simplify right side
    21,210.20x = 256,296,691.74
  5. Step 5: Solve for x
    x = 256,296,691.74/21,210.20
  6. Step 6: Final answer
    x = 12,083.65

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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.