Home / 31,014.72-42,800.40-16,867.56

Finding the Fourth Proportional to 31,014.72, 42,800.40 and 16,867.56

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Solution

The fourth proportional to 31,014.72, 42,800.40 and 16,867.56 is: 23,277.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,014.72 : 42,800.40 = 16,867.56 : x
  2. Step 2: Convert to fraction form
    31,014.72/42,800.40 = 16,867.56/x
  3. Step 3: Cross multiply
    31,014.72x = 42,800.40 × 16,867.56
  4. Step 4: Simplify right side
    31,014.72x = 721,938,315.02
  5. Step 5: Solve for x
    x = 721,938,315.02/31,014.72
  6. Step 6: Final answer
    x = 23,277.28

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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.