Home / 11,515.08-15,894.72-7,983

Finding the Fourth Proportional to 11,515.08, 15,894.72 and 7,983

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Solution

The fourth proportional to 11,515.08, 15,894.72 and 7,983 is: 11,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.08 : 15,894.72 = 7,983 : x
  2. Step 2: Convert to fraction form
    11,515.08/15,894.72 = 7,983/x
  3. Step 3: Cross multiply
    11,515.08x = 15,894.72 × 7,983
  4. Step 4: Simplify right side
    11,515.08x = 126,887,549.76
  5. Step 5: Solve for x
    x = 126,887,549.76/11,515.08
  6. Step 6: Final answer
    x = 11,019.25

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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.