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Finding the Fourth Proportional to 11,463.10, 15,820.44 and 6,987.48

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Solution

The fourth proportional to 11,463.10, 15,820.44 and 6,987.48 is: 9,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,463.10 : 15,820.44 = 6,987.48 : x
  2. Step 2: Convert to fraction form
    11,463.10/15,820.44 = 6,987.48/x
  3. Step 3: Cross multiply
    11,463.10x = 15,820.44 × 6,987.48
  4. Step 4: Simplify right side
    11,463.10x = 110,545,008.09
  5. Step 5: Solve for x
    x = 110,545,008.09/11,463.10
  6. Step 6: Final answer
    x = 9,643.55

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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.