Home / 31,262.15-43,143.15-18,686.63

Finding the Fourth Proportional to 31,262.15, 43,143.15 and 18,686.63

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Solution

The fourth proportional to 31,262.15, 43,143.15 and 18,686.63 is: 25,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.15 : 43,143.15 = 18,686.63 : x
  2. Step 2: Convert to fraction form
    31,262.15/43,143.15 = 18,686.63/x
  3. Step 3: Cross multiply
    31,262.15x = 43,143.15 × 18,686.63
  4. Step 4: Simplify right side
    31,262.15x = 806,199,865.37
  5. Step 5: Solve for x
    x = 806,199,865.37/31,262.15
  6. Step 6: Final answer
    x = 25,788.37

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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.