Home / 11,340.18-15,647.18-6,623.55

Finding the Fourth Proportional to 11,340.18, 15,647.18 and 6,623.55

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Solution

The fourth proportional to 11,340.18, 15,647.18 and 6,623.55 is: 9,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,340.18 : 15,647.18 = 6,623.55 : x
  2. Step 2: Convert to fraction form
    11,340.18/15,647.18 = 6,623.55/x
  3. Step 3: Cross multiply
    11,340.18x = 15,647.18 × 6,623.55
  4. Step 4: Simplify right side
    11,340.18x = 103,639,845.97
  5. Step 5: Solve for x
    x = 103,639,845.97/11,340.18
  6. Step 6: Final answer
    x = 9,139.17

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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.