Home / 23,188.42-31,999.84-12,979.46

Finding the Fourth Proportional to 23,188.42, 31,999.84 and 12,979.46

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Solution

The fourth proportional to 23,188.42, 31,999.84 and 12,979.46 is: 17,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,188.42 : 31,999.84 = 12,979.46 : x
  2. Step 2: Convert to fraction form
    23,188.42/31,999.84 = 12,979.46/x
  3. Step 3: Cross multiply
    23,188.42x = 31,999.84 × 12,979.46
  4. Step 4: Simplify right side
    23,188.42x = 415,340,643.29
  5. Step 5: Solve for x
    x = 415,340,643.29/23,188.42
  6. Step 6: Final answer
    x = 17,911.55

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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.