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Finding the Fourth Proportional to 10,913.62, 15,048.86 and 7,370.68

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Solution

The fourth proportional to 10,913.62, 15,048.86 and 7,370.68 is: 10,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.62 : 15,048.86 = 7,370.68 : x
  2. Step 2: Convert to fraction form
    10,913.62/15,048.86 = 7,370.68/x
  3. Step 3: Cross multiply
    10,913.62x = 15,048.86 × 7,370.68
  4. Step 4: Simplify right side
    10,913.62x = 110,920,331.42
  5. Step 5: Solve for x
    x = 110,920,331.42/10,913.62
  6. Step 6: Final answer
    x = 10,163.48

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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.