Home / 12,121.22-16,721.66-7,085.66

Finding the Fourth Proportional to 12,121.22, 16,721.66 and 7,085.66

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Solution

The fourth proportional to 12,121.22, 16,721.66 and 7,085.66 is: 9,774.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.22 : 16,721.66 = 7,085.66 : x
  2. Step 2: Convert to fraction form
    12,121.22/16,721.66 = 7,085.66/x
  3. Step 3: Cross multiply
    12,121.22x = 16,721.66 × 7,085.66
  4. Step 4: Simplify right side
    12,121.22x = 118,483,931.50
  5. Step 5: Solve for x
    x = 118,483,931.50/12,121.22
  6. Step 6: Final answer
    x = 9,774.92

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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.