Home / 11,345.67-15,660.54-6,631.47

Finding the Fourth Proportional to 11,345.67, 15,660.54 and 6,631.47

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Solution

The fourth proportional to 11,345.67, 15,660.54 and 6,631.47 is: 9,153.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.67 : 15,660.54 = 6,631.47 : x
  2. Step 2: Convert to fraction form
    11,345.67/15,660.54 = 6,631.47/x
  3. Step 3: Cross multiply
    11,345.67x = 15,660.54 × 6,631.47
  4. Step 4: Simplify right side
    11,345.67x = 103,852,401.19
  5. Step 5: Solve for x
    x = 103,852,401.19/11,345.67
  6. Step 6: Final answer
    x = 9,153.48

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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.