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Finding the Fourth Proportional to 15,483.60, 21,367.60 and 8,410.16

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Solution

The fourth proportional to 15,483.60, 21,367.60 and 8,410.16 is: 11,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,483.60 : 21,367.60 = 8,410.16 : x
  2. Step 2: Convert to fraction form
    15,483.60/21,367.60 = 8,410.16/x
  3. Step 3: Cross multiply
    15,483.60x = 21,367.60 × 8,410.16
  4. Step 4: Simplify right side
    15,483.60x = 179,704,934.82
  5. Step 5: Solve for x
    x = 179,704,934.82/15,483.60
  6. Step 6: Final answer
    x = 11,606.15

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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.