Home / 31,637.91-43,658.93-18,209.60

Finding the Fourth Proportional to 31,637.91, 43,658.93 and 18,209.60

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Solution

The fourth proportional to 31,637.91, 43,658.93 and 18,209.60 is: 25,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,637.91 : 43,658.93 = 18,209.60 : x
  2. Step 2: Convert to fraction form
    31,637.91/43,658.93 = 18,209.60/x
  3. Step 3: Cross multiply
    31,637.91x = 43,658.93 × 18,209.60
  4. Step 4: Simplify right side
    31,637.91x = 795,011,478.96
  5. Step 5: Solve for x
    x = 795,011,478.96/31,637.91
  6. Step 6: Final answer
    x = 25,128.44

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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.