Home / 12,025.85-16,590.97-6,989.18

Finding the Fourth Proportional to 12,025.85, 16,590.97 and 6,989.18

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Solution

The fourth proportional to 12,025.85, 16,590.97 and 6,989.18 is: 9,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,025.85 : 16,590.97 = 6,989.18 : x
  2. Step 2: Convert to fraction form
    12,025.85/16,590.97 = 6,989.18/x
  3. Step 3: Cross multiply
    12,025.85x = 16,590.97 × 6,989.18
  4. Step 4: Simplify right side
    12,025.85x = 115,957,275.70
  5. Step 5: Solve for x
    x = 115,957,275.70/12,025.85
  6. Step 6: Final answer
    x = 9,642.34

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Half scale
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Double scale
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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.