Home / 31,465.71-43,422.66-18,890.46

Finding the Fourth Proportional to 31,465.71, 43,422.66 and 18,890.46

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Solution

The fourth proportional to 31,465.71, 43,422.66 and 18,890.46 is: 26,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,465.71 : 43,422.66 = 18,890.46 : x
  2. Step 2: Convert to fraction form
    31,465.71/43,422.66 = 18,890.46/x
  3. Step 3: Cross multiply
    31,465.71x = 43,422.66 × 18,890.46
  4. Step 4: Simplify right side
    31,465.71x = 820,274,021.82
  5. Step 5: Solve for x
    x = 820,274,021.82/31,465.71
  6. Step 6: Final answer
    x = 26,068.82

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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.