Home / 11,420.08-15,755.02-6,943.12

Finding the Fourth Proportional to 11,420.08, 15,755.02 and 6,943.12

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Solution

The fourth proportional to 11,420.08, 15,755.02 and 6,943.12 is: 9,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.08 : 15,755.02 = 6,943.12 : x
  2. Step 2: Convert to fraction form
    11,420.08/15,755.02 = 6,943.12/x
  3. Step 3: Cross multiply
    11,420.08x = 15,755.02 × 6,943.12
  4. Step 4: Simplify right side
    11,420.08x = 109,388,937.72
  5. Step 5: Solve for x
    x = 109,388,937.72/11,420.08
  6. Step 6: Final answer
    x = 9,578.65

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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.