Home / 31,304.40-43,175.88-18,715.92

Finding the Fourth Proportional to 31,304.40, 43,175.88 and 18,715.92

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Solution

The fourth proportional to 31,304.40, 43,175.88 and 18,715.92 is: 25,813.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,304.40 : 43,175.88 = 18,715.92 : x
  2. Step 2: Convert to fraction form
    31,304.40/43,175.88 = 18,715.92/x
  3. Step 3: Cross multiply
    31,304.40x = 43,175.88 × 18,715.92
  4. Step 4: Simplify right side
    31,304.40x = 808,076,316.01
  5. Step 5: Solve for x
    x = 808,076,316.01/31,304.40
  6. Step 6: Final answer
    x = 25,813.51

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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.