Home / 11,590.16-15,997.28-7,115.00

Finding the Fourth Proportional to 11,590.16, 15,997.28 and 7,115.00

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Solution

The fourth proportional to 11,590.16, 15,997.28 and 7,115.00 is: 9,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,590.16 : 15,997.28 = 7,115.00 : x
  2. Step 2: Convert to fraction form
    11,590.16/15,997.28 = 7,115.00/x
  3. Step 3: Cross multiply
    11,590.16x = 15,997.28 × 7,115.00
  4. Step 4: Simplify right side
    11,590.16x = 113,820,531.64
  5. Step 5: Solve for x
    x = 113,820,531.64/11,590.16
  6. Step 6: Final answer
    x = 9,820.45

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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.