Home / 31,173.04-43,005.09-18,590.50

Finding the Fourth Proportional to 31,173.04, 43,005.09 and 18,590.50

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Solution

The fourth proportional to 31,173.04, 43,005.09 and 18,590.50 is: 25,646.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,173.04 : 43,005.09 = 18,590.50 : x
  2. Step 2: Convert to fraction form
    31,173.04/43,005.09 = 18,590.50/x
  3. Step 3: Cross multiply
    31,173.04x = 43,005.09 × 18,590.50
  4. Step 4: Simplify right side
    31,173.04x = 799,486,125.65
  5. Step 5: Solve for x
    x = 799,486,125.65/31,173.04
  6. Step 6: Final answer
    x = 25,646.72

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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.