Home / 31,015.13-42,801.03-16,867.98

Finding the Fourth Proportional to 31,015.13, 42,801.03 and 16,867.98

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Solution

The fourth proportional to 31,015.13, 42,801.03 and 16,867.98 is: 23,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,015.13 : 42,801.03 = 16,867.98 : x
  2. Step 2: Convert to fraction form
    31,015.13/42,801.03 = 16,867.98/x
  3. Step 3: Cross multiply
    31,015.13x = 42,801.03 × 16,867.98
  4. Step 4: Simplify right side
    31,015.13x = 721,966,918.02
  5. Step 5: Solve for x
    x = 721,966,918.02/31,015.13
  6. Step 6: Final answer
    x = 23,277.90

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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.