Home / 31,395.69-43,325.94-18,657.63

Finding the Fourth Proportional to 31,395.69, 43,325.94 and 18,657.63

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Solution

The fourth proportional to 31,395.69, 43,325.94 and 18,657.63 is: 25,747.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395.69 : 43,325.94 = 18,657.63 : x
  2. Step 2: Convert to fraction form
    31,395.69/43,325.94 = 18,657.63/x
  3. Step 3: Cross multiply
    31,395.69x = 43,325.94 × 18,657.63
  4. Step 4: Simplify right side
    31,395.69x = 808,359,357.92
  5. Step 5: Solve for x
    x = 808,359,357.92/31,395.69
  6. Step 6: Final answer
    x = 25,747.46

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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.