Home / 16,390.72-22,619.16-9,220.64

Finding the Fourth Proportional to 16,390.72, 22,619.16 and 9,220.64

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Solution

The fourth proportional to 16,390.72, 22,619.16 and 9,220.64 is: 12,724.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.72 : 22,619.16 = 9,220.64 : x
  2. Step 2: Convert to fraction form
    16,390.72/22,619.16 = 9,220.64/x
  3. Step 3: Cross multiply
    16,390.72x = 22,619.16 × 9,220.64
  4. Step 4: Simplify right side
    16,390.72x = 208,563,227.66
  5. Step 5: Solve for x
    x = 208,563,227.66/16,390.72
  6. Step 6: Final answer
    x = 12,724.47

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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.