Home / 20,877.04-31,322.40-7,730.44

Finding the Fourth Proportional to 20,877.04, 31,322.40 and 7,730.44

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Solution

The fourth proportional to 20,877.04, 31,322.40 and 7,730.44 is: 11,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.04 : 31,322.40 = 7,730.44 : x
  2. Step 2: Convert to fraction form
    20,877.04/31,322.40 = 7,730.44/x
  3. Step 3: Cross multiply
    20,877.04x = 31,322.40 × 7,730.44
  4. Step 4: Simplify right side
    20,877.04x = 242,135,933.86
  5. Step 5: Solve for x
    x = 242,135,933.86/20,877.04
  6. Step 6: Final answer
    x = 11,598.19

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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.