Home / 11,130.75-15,356.18-7,355.73

Finding the Fourth Proportional to 11,130.75, 15,356.18 and 7,355.73

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Solution

The fourth proportional to 11,130.75, 15,356.18 and 7,355.73 is: 10,148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.75 : 15,356.18 = 7,355.73 : x
  2. Step 2: Convert to fraction form
    11,130.75/15,356.18 = 7,355.73/x
  3. Step 3: Cross multiply
    11,130.75x = 15,356.18 × 7,355.73
  4. Step 4: Simplify right side
    11,130.75x = 112,955,877.13
  5. Step 5: Solve for x
    x = 112,955,877.13/11,130.75
  6. Step 6: Final answer
    x = 10,148.09

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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.