Home / 20,974.60-31,457.04-9,281.44

Finding the Fourth Proportional to 20,974.60, 31,457.04 and 9,281.44

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Solution

The fourth proportional to 20,974.60, 31,457.04 and 9,281.44 is: 13,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.60 : 31,457.04 = 9,281.44 : x
  2. Step 2: Convert to fraction form
    20,974.60/31,457.04 = 9,281.44/x
  3. Step 3: Cross multiply
    20,974.60x = 31,457.04 × 9,281.44
  4. Step 4: Simplify right side
    20,974.60x = 291,966,629.34
  5. Step 5: Solve for x
    x = 291,966,629.34/20,974.60
  6. Step 6: Final answer
    x = 13,920.01

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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.