Home / 20,867.94-31,312.02-9,179.64

Finding the Fourth Proportional to 20,867.94, 31,312.02 and 9,179.64

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Solution

The fourth proportional to 20,867.94, 31,312.02 and 9,179.64 is: 13,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.94 : 31,312.02 = 9,179.64 : x
  2. Step 2: Convert to fraction form
    20,867.94/31,312.02 = 9,179.64/x
  3. Step 3: Cross multiply
    20,867.94x = 31,312.02 × 9,179.64
  4. Step 4: Simplify right side
    20,867.94x = 287,433,071.27
  5. Step 5: Solve for x
    x = 287,433,071.27/20,867.94
  6. Step 6: Final answer
    x = 13,773.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.