Home / 31,015.24-42,800.56-16,867.76

Finding the Fourth Proportional to 31,015.24, 42,800.56 and 16,867.76

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Solution

The fourth proportional to 31,015.24, 42,800.56 and 16,867.76 is: 23,277.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.24 : 42,800.56 = 16,867.76 : x
  2. Step 2: Convert to fraction form
    31,015.24/42,800.56 = 16,867.76/x
  3. Step 3: Cross multiply
    31,015.24x = 42,800.56 × 16,867.76
  4. Step 4: Simplify right side
    31,015.24x = 721,949,573.95
  5. Step 5: Solve for x
    x = 721,949,573.95/31,015.24
  6. Step 6: Final answer
    x = 23,277.25

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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.