Home / 20,967.68-28,925.76-13,410.24

Finding the Fourth Proportional to 20,967.68, 28,925.76 and 13,410.24

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Solution

The fourth proportional to 20,967.68, 28,925.76 and 13,410.24 is: 18,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.68 : 28,925.76 = 13,410.24 : x
  2. Step 2: Convert to fraction form
    20,967.68/28,925.76 = 13,410.24/x
  3. Step 3: Cross multiply
    20,967.68x = 28,925.76 × 13,410.24
  4. Step 4: Simplify right side
    20,967.68x = 387,901,383.78
  5. Step 5: Solve for x
    x = 387,901,383.78/20,967.68
  6. Step 6: Final answer
    x = 18,499.97

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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.