Home / 31,076.60-42,868.86-18,498.92

Finding the Fourth Proportional to 31,076.60, 42,868.86 and 18,498.92

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Solution

The fourth proportional to 31,076.60, 42,868.86 and 18,498.92 is: 25,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,076.60 : 42,868.86 = 18,498.92 : x
  2. Step 2: Convert to fraction form
    31,076.60/42,868.86 = 18,498.92/x
  3. Step 3: Cross multiply
    31,076.60x = 42,868.86 × 18,498.92
  4. Step 4: Simplify right side
    31,076.60x = 793,027,611.63
  5. Step 5: Solve for x
    x = 793,027,611.63/31,076.60
  6. Step 6: Final answer
    x = 25,518.48

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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.