Home / 31,319.04-43,225.80-18,743.76

Finding the Fourth Proportional to 31,319.04, 43,225.80 and 18,743.76

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Solution

The fourth proportional to 31,319.04, 43,225.80 and 18,743.76 is: 25,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.04 : 43,225.80 = 18,743.76 : x
  2. Step 2: Convert to fraction form
    31,319.04/43,225.80 = 18,743.76/x
  3. Step 3: Cross multiply
    31,319.04x = 43,225.80 × 18,743.76
  4. Step 4: Simplify right side
    31,319.04x = 810,214,021.01
  5. Step 5: Solve for x
    x = 810,214,021.01/31,319.04
  6. Step 6: Final answer
    x = 25,869.70

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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.