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Finding the Fourth Proportional to 11,393.49, 15,721.13 and 7,610.59

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Solution

The fourth proportional to 11,393.49, 15,721.13 and 7,610.59 is: 10,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.49 : 15,721.13 = 7,610.59 : x
  2. Step 2: Convert to fraction form
    11,393.49/15,721.13 = 7,610.59/x
  3. Step 3: Cross multiply
    11,393.49x = 15,721.13 × 7,610.59
  4. Step 4: Simplify right side
    11,393.49x = 119,647,054.49
  5. Step 5: Solve for x
    x = 119,647,054.49/11,393.49
  6. Step 6: Final answer
    x = 10,501.35

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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.