Home / 15,590.20-21,509.14-8,874.15

Finding the Fourth Proportional to 15,590.20, 21,509.14 and 8,874.15

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Solution

The fourth proportional to 15,590.20, 21,509.14 and 8,874.15 is: 12,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.20 : 21,509.14 = 8,874.15 : x
  2. Step 2: Convert to fraction form
    15,590.20/21,509.14 = 8,874.15/x
  3. Step 3: Cross multiply
    15,590.20x = 21,509.14 × 8,874.15
  4. Step 4: Simplify right side
    15,590.20x = 190,875,334.73
  5. Step 5: Solve for x
    x = 190,875,334.73/15,590.20
  6. Step 6: Final answer
    x = 12,243.29

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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.