Home / 19,117.76-28,675.85-6,640.61

Finding the Fourth Proportional to 19,117.76, 28,675.85 and 6,640.61

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Solution

The fourth proportional to 19,117.76, 28,675.85 and 6,640.61 is: 9,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.76 : 28,675.85 = 6,640.61 : x
  2. Step 2: Convert to fraction form
    19,117.76/28,675.85 = 6,640.61/x
  3. Step 3: Cross multiply
    19,117.76x = 28,675.85 × 6,640.61
  4. Step 4: Simplify right side
    19,117.76x = 190,424,959.69
  5. Step 5: Solve for x
    x = 190,424,959.69/19,117.76
  6. Step 6: Final answer
    x = 9,960.63

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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.