Home / 31,318.04-43,220.67-18,578.77

Finding the Fourth Proportional to 31,318.04, 43,220.67 and 18,578.77

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Solution

The fourth proportional to 31,318.04, 43,220.67 and 18,578.77 is: 25,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.04 : 43,220.67 = 18,578.77 : x
  2. Step 2: Convert to fraction form
    31,318.04/43,220.67 = 18,578.77/x
  3. Step 3: Cross multiply
    31,318.04x = 43,220.67 × 18,578.77
  4. Step 4: Simplify right side
    31,318.04x = 802,986,860.16
  5. Step 5: Solve for x
    x = 802,986,860.16/31,318.04
  6. Step 6: Final answer
    x = 25,639.75

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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.