Home / 11,542.72-15,920.40-7,352.32

Finding the Fourth Proportional to 11,542.72, 15,920.40 and 7,352.32

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Solution

The fourth proportional to 11,542.72, 15,920.40 and 7,352.32 is: 10,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,542.72 : 15,920.40 = 7,352.32 : x
  2. Step 2: Convert to fraction form
    11,542.72/15,920.40 = 7,352.32/x
  3. Step 3: Cross multiply
    11,542.72x = 15,920.40 × 7,352.32
  4. Step 4: Simplify right side
    11,542.72x = 117,051,875.33
  5. Step 5: Solve for x
    x = 117,051,875.33/11,542.72
  6. Step 6: Final answer
    x = 10,140.75

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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.