Home / 15,512.60-21,417.64-11,921.14

Finding the Fourth Proportional to 15,512.60, 21,417.64 and 11,921.14

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Solution

The fourth proportional to 15,512.60, 21,417.64 and 11,921.14 is: 16,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.60 : 21,417.64 = 11,921.14 : x
  2. Step 2: Convert to fraction form
    15,512.60/21,417.64 = 11,921.14/x
  3. Step 3: Cross multiply
    15,512.60x = 21,417.64 × 11,921.14
  4. Step 4: Simplify right side
    15,512.60x = 255,322,684.91
  5. Step 5: Solve for x
    x = 255,322,684.91/15,512.60
  6. Step 6: Final answer
    x = 16,459.05

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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.