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Finding the Fourth Proportional to 11,130.68, 15,362.22 and 6,417.68

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Solution

The fourth proportional to 11,130.68, 15,362.22 and 6,417.68 is: 8,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.68 : 15,362.22 = 6,417.68 : x
  2. Step 2: Convert to fraction form
    11,130.68/15,362.22 = 6,417.68/x
  3. Step 3: Cross multiply
    11,130.68x = 15,362.22 × 6,417.68
  4. Step 4: Simplify right side
    11,130.68x = 98,589,812.05
  5. Step 5: Solve for x
    x = 98,589,812.05/11,130.68
  6. Step 6: Final answer
    x = 8,857.48

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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.