Home / 20,712.41-31,068.60-5,921.32

Finding the Fourth Proportional to 20,712.41, 31,068.60 and 5,921.32

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Solution

The fourth proportional to 20,712.41, 31,068.60 and 5,921.32 is: 8,881.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.41 : 31,068.60 = 5,921.32 : x
  2. Step 2: Convert to fraction form
    20,712.41/31,068.60 = 5,921.32/x
  3. Step 3: Cross multiply
    20,712.41x = 31,068.60 × 5,921.32
  4. Step 4: Simplify right side
    20,712.41x = 183,966,967.21
  5. Step 5: Solve for x
    x = 183,966,967.21/20,712.41
  6. Step 6: Final answer
    x = 8,881.97

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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.