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Finding the Fourth Proportional to 11,393.74, 15,721.48 and 7,610.84

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Solution

The fourth proportional to 11,393.74, 15,721.48 and 7,610.84 is: 10,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.74 : 15,721.48 = 7,610.84 : x
  2. Step 2: Convert to fraction form
    11,393.74/15,721.48 = 7,610.84/x
  3. Step 3: Cross multiply
    11,393.74x = 15,721.48 × 7,610.84
  4. Step 4: Simplify right side
    11,393.74x = 119,653,668.84
  5. Step 5: Solve for x
    x = 119,653,668.84/11,393.74
  6. Step 6: Final answer
    x = 10,501.70

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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.