Home / 31,617.89-43,637.06-18,188.90

Finding the Fourth Proportional to 31,617.89, 43,637.06 and 18,188.90

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Solution

The fourth proportional to 31,617.89, 43,637.06 and 18,188.90 is: 25,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,617.89 : 43,637.06 = 18,188.90 : x
  2. Step 2: Convert to fraction form
    31,617.89/43,637.06 = 18,188.90/x
  3. Step 3: Cross multiply
    31,617.89x = 43,637.06 × 18,188.90
  4. Step 4: Simplify right side
    31,617.89x = 793,710,120.63
  5. Step 5: Solve for x
    x = 793,710,120.63/31,617.89
  6. Step 6: Final answer
    x = 25,103.20

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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.