Home / 22,216.32-30,666.24-12,788.64

Finding the Fourth Proportional to 22,216.32, 30,666.24 and 12,788.64

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Solution

The fourth proportional to 22,216.32, 30,666.24 and 12,788.64 is: 17,652.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,216.32 : 30,666.24 = 12,788.64 : x
  2. Step 2: Convert to fraction form
    22,216.32/30,666.24 = 12,788.64/x
  3. Step 3: Cross multiply
    22,216.32x = 30,666.24 × 12,788.64
  4. Step 4: Simplify right side
    22,216.32x = 392,179,503.51
  5. Step 5: Solve for x
    x = 392,179,503.51/22,216.32
  6. Step 6: Final answer
    x = 17,652.77

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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.