Home / 31,134.41-42,965.63-16,987.55

Finding the Fourth Proportional to 31,134.41, 42,965.63 and 16,987.55

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Solution

The fourth proportional to 31,134.41, 42,965.63 and 16,987.55 is: 23,442.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,134.41 : 42,965.63 = 16,987.55 : x
  2. Step 2: Convert to fraction form
    31,134.41/42,965.63 = 16,987.55/x
  3. Step 3: Cross multiply
    31,134.41x = 42,965.63 × 16,987.55
  4. Step 4: Simplify right side
    31,134.41x = 729,880,702.97
  5. Step 5: Solve for x
    x = 729,880,702.97/31,134.41
  6. Step 6: Final answer
    x = 23,442.89

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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.