Home / 11,110.48-15,325.20-7,125.28

Finding the Fourth Proportional to 11,110.48, 15,325.20 and 7,125.28

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Solution

The fourth proportional to 11,110.48, 15,325.20 and 7,125.28 is: 9,828.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.48 : 15,325.20 = 7,125.28 : x
  2. Step 2: Convert to fraction form
    11,110.48/15,325.20 = 7,125.28/x
  3. Step 3: Cross multiply
    11,110.48x = 15,325.20 × 7,125.28
  4. Step 4: Simplify right side
    11,110.48x = 109,196,302.74
  5. Step 5: Solve for x
    x = 109,196,302.74/11,110.48
  6. Step 6: Final answer
    x = 9,828.23

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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.