Home / 11,320.80-15,621.95-6,284.78

Finding the Fourth Proportional to 11,320.80, 15,621.95 and 6,284.78

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Solution

The fourth proportional to 11,320.80, 15,621.95 and 6,284.78 is: 8,672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.80 : 15,621.95 = 6,284.78 : x
  2. Step 2: Convert to fraction form
    11,320.80/15,621.95 = 6,284.78/x
  3. Step 3: Cross multiply
    11,320.80x = 15,621.95 × 6,284.78
  4. Step 4: Simplify right side
    11,320.80x = 98,180,456.52
  5. Step 5: Solve for x
    x = 98,180,456.52/11,320.80
  6. Step 6: Final answer
    x = 8,672.57

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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.