Home / 15,920.32-21,968.40-8,845.96

Finding the Fourth Proportional to 15,920.32, 21,968.40 and 8,845.96

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Solution

The fourth proportional to 15,920.32, 21,968.40 and 8,845.96 is: 12,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.32 : 21,968.40 = 8,845.96 : x
  2. Step 2: Convert to fraction form
    15,920.32/21,968.40 = 8,845.96/x
  3. Step 3: Cross multiply
    15,920.32x = 21,968.40 × 8,845.96
  4. Step 4: Simplify right side
    15,920.32x = 194,331,587.66
  5. Step 5: Solve for x
    x = 194,331,587.66/15,920.32
  6. Step 6: Final answer
    x = 12,206.51

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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.