Home / 11,127.77-15,351.12-6,409.31

Finding the Fourth Proportional to 11,127.77, 15,351.12 and 6,409.31

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Solution

The fourth proportional to 11,127.77, 15,351.12 and 6,409.31 is: 8,841.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.77 : 15,351.12 = 6,409.31 : x
  2. Step 2: Convert to fraction form
    11,127.77/15,351.12 = 6,409.31/x
  3. Step 3: Cross multiply
    11,127.77x = 15,351.12 × 6,409.31
  4. Step 4: Simplify right side
    11,127.77x = 98,390,010.17
  5. Step 5: Solve for x
    x = 98,390,010.17/11,127.77
  6. Step 6: Final answer
    x = 8,841.85

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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.