Home / 15,920.12-21,971.40-8,848.82

Finding the Fourth Proportional to 15,920.12, 21,971.40 and 8,848.82

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Solution

The fourth proportional to 15,920.12, 21,971.40 and 8,848.82 is: 12,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.12 : 21,971.40 = 8,848.82 : x
  2. Step 2: Convert to fraction form
    15,920.12/21,971.40 = 8,848.82/x
  3. Step 3: Cross multiply
    15,920.12x = 21,971.40 × 8,848.82
  4. Step 4: Simplify right side
    15,920.12x = 194,420,963.75
  5. Step 5: Solve for x
    x = 194,420,963.75/15,920.12
  6. Step 6: Final answer
    x = 12,212.28

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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.