Home / 31,000.23-42,780.78-16,853.04

Finding the Fourth Proportional to 31,000.23, 42,780.78 and 16,853.04

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Solution

The fourth proportional to 31,000.23, 42,780.78 and 16,853.04 is: 23,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.23 : 42,780.78 = 16,853.04 : x
  2. Step 2: Convert to fraction form
    31,000.23/42,780.78 = 16,853.04/x
  3. Step 3: Cross multiply
    31,000.23x = 42,780.78 × 16,853.04
  4. Step 4: Simplify right side
    31,000.23x = 720,986,196.57
  5. Step 5: Solve for x
    x = 720,986,196.57/31,000.23
  6. Step 6: Final answer
    x = 23,257.45

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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.