Home / 31,013.16-42,797.80-16,865.68

Finding the Fourth Proportional to 31,013.16, 42,797.80 and 16,865.68

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Solution

The fourth proportional to 31,013.16, 42,797.80 and 16,865.68 is: 23,274.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,013.16 : 42,797.80 = 16,865.68 : x
  2. Step 2: Convert to fraction form
    31,013.16/42,797.80 = 16,865.68/x
  3. Step 3: Cross multiply
    31,013.16x = 42,797.80 × 16,865.68
  4. Step 4: Simplify right side
    31,013.16x = 721,813,999.50
  5. Step 5: Solve for x
    x = 721,813,999.50/31,013.16
  6. Step 6: Final answer
    x = 23,274.44

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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.