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Finding the Fourth Proportional to 10,903.20, 15,051.04 and 7,371.20

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Solution

The fourth proportional to 10,903.20, 15,051.04 and 7,371.20 is: 10,175.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.20 : 15,051.04 = 7,371.20 : x
  2. Step 2: Convert to fraction form
    10,903.20/15,051.04 = 7,371.20/x
  3. Step 3: Cross multiply
    10,903.20x = 15,051.04 × 7,371.20
  4. Step 4: Simplify right side
    10,903.20x = 110,944,226.05
  5. Step 5: Solve for x
    x = 110,944,226.05/10,903.20
  6. Step 6: Final answer
    x = 10,175.38

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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.