Home / 20,712.95-31,074.29-5,921.47

Finding the Fourth Proportional to 20,712.95, 31,074.29 and 5,921.47

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Solution

The fourth proportional to 20,712.95, 31,074.29 and 5,921.47 is: 8,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.95 : 31,074.29 = 5,921.47 : x
  2. Step 2: Convert to fraction form
    20,712.95/31,074.29 = 5,921.47/x
  3. Step 3: Cross multiply
    20,712.95x = 31,074.29 × 5,921.47
  4. Step 4: Simplify right side
    20,712.95x = 184,005,476.01
  5. Step 5: Solve for x
    x = 184,005,476.01/20,712.95
  6. Step 6: Final answer
    x = 8,883.60

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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.