Home / 12,292.76-16,961.10-6,990.50

Finding the Fourth Proportional to 12,292.76, 16,961.10 and 6,990.50

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Solution

The fourth proportional to 12,292.76, 16,961.10 and 6,990.50 is: 9,645.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,292.76 : 16,961.10 = 6,990.50 : x
  2. Step 2: Convert to fraction form
    12,292.76/16,961.10 = 6,990.50/x
  3. Step 3: Cross multiply
    12,292.76x = 16,961.10 × 6,990.50
  4. Step 4: Simplify right side
    12,292.76x = 118,566,585.74
  5. Step 5: Solve for x
    x = 118,566,585.74/12,292.76
  6. Step 6: Final answer
    x = 9,645.24

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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.