Home / 11,512.08-15,893.28-7,740.72

Finding the Fourth Proportional to 11,512.08, 15,893.28 and 7,740.72

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Solution

The fourth proportional to 11,512.08, 15,893.28 and 7,740.72 is: 10,686.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,512.08 : 15,893.28 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    11,512.08/15,893.28 = 7,740.72/x
  3. Step 3: Cross multiply
    11,512.08x = 15,893.28 × 7,740.72
  4. Step 4: Simplify right side
    11,512.08x = 123,025,430.36
  5. Step 5: Solve for x
    x = 123,025,430.36/11,512.08
  6. Step 6: Final answer
    x = 10,686.64

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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.