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Finding the Fourth Proportional to 15,468.74, 21,346.62 and 8,395.10

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Solution

The fourth proportional to 15,468.74, 21,346.62 and 8,395.10 is: 11,585.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,468.74 : 21,346.62 = 8,395.10 : x
  2. Step 2: Convert to fraction form
    15,468.74/21,346.62 = 8,395.10/x
  3. Step 3: Cross multiply
    15,468.74x = 21,346.62 × 8,395.10
  4. Step 4: Simplify right side
    15,468.74x = 179,207,009.56
  5. Step 5: Solve for x
    x = 179,207,009.56/15,468.74
  6. Step 6: Final answer
    x = 11,585.11

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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.