Home / 31,069.79-42,877.38-17,640.60

Finding the Fourth Proportional to 31,069.79, 42,877.38 and 17,640.60

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Solution

The fourth proportional to 31,069.79, 42,877.38 and 17,640.60 is: 24,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,069.79 : 42,877.38 = 17,640.60 : x
  2. Step 2: Convert to fraction form
    31,069.79/42,877.38 = 17,640.60/x
  3. Step 3: Cross multiply
    31,069.79x = 42,877.38 × 17,640.60
  4. Step 4: Simplify right side
    31,069.79x = 756,382,709.63
  5. Step 5: Solve for x
    x = 756,382,709.63/31,069.79
  6. Step 6: Final answer
    x = 24,344.64

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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.