Home / 11,124.79-15,345.54-7,347.96

Finding the Fourth Proportional to 11,124.79, 15,345.54 and 7,347.96

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Solution

The fourth proportional to 11,124.79, 15,345.54 and 7,347.96 is: 10,135.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,124.79 : 15,345.54 = 7,347.96 : x
  2. Step 2: Convert to fraction form
    11,124.79/15,345.54 = 7,347.96/x
  3. Step 3: Cross multiply
    11,124.79x = 15,345.54 × 7,347.96
  4. Step 4: Simplify right side
    11,124.79x = 112,758,414.10
  5. Step 5: Solve for x
    x = 112,758,414.10/11,124.79
  6. Step 6: Final answer
    x = 10,135.78

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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.