Home / 11,143.36-15,372.07-7,557.10

Finding the Fourth Proportional to 11,143.36, 15,372.07 and 7,557.10

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Solution

The fourth proportional to 11,143.36, 15,372.07 and 7,557.10 is: 10,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.36 : 15,372.07 = 7,557.10 : x
  2. Step 2: Convert to fraction form
    11,143.36/15,372.07 = 7,557.10/x
  3. Step 3: Cross multiply
    11,143.36x = 15,372.07 × 7,557.10
  4. Step 4: Simplify right side
    11,143.36x = 116,168,270.20
  5. Step 5: Solve for x
    x = 116,168,270.20/11,143.36
  6. Step 6: Final answer
    x = 10,424.89

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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.