Home / 31,620.30-43,637.28-18,191.58

Finding the Fourth Proportional to 31,620.30, 43,637.28 and 18,191.58

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Solution

The fourth proportional to 31,620.30, 43,637.28 and 18,191.58 is: 25,105.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620.30 : 43,637.28 = 18,191.58 : x
  2. Step 2: Convert to fraction form
    31,620.30/43,637.28 = 18,191.58/x
  3. Step 3: Cross multiply
    31,620.30x = 43,637.28 × 18,191.58
  4. Step 4: Simplify right side
    31,620.30x = 793,831,070.10
  5. Step 5: Solve for x
    x = 793,831,070.10/31,620.30
  6. Step 6: Final answer
    x = 25,105.11

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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.