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Finding the Fourth Proportional to 11,235.85, 15,510.44 and 7,258.90

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Solution

The fourth proportional to 11,235.85, 15,510.44 and 7,258.90 is: 10,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.85 : 15,510.44 = 7,258.90 : x
  2. Step 2: Convert to fraction form
    11,235.85/15,510.44 = 7,258.90/x
  3. Step 3: Cross multiply
    11,235.85x = 15,510.44 × 7,258.90
  4. Step 4: Simplify right side
    11,235.85x = 112,588,732.92
  5. Step 5: Solve for x
    x = 112,588,732.92/11,235.85
  6. Step 6: Final answer
    x = 10,020.49

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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.