Home / 20,678.40-31,030.36-9,583.02

Finding the Fourth Proportional to 20,678.40, 31,030.36 and 9,583.02

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Solution

The fourth proportional to 20,678.40, 31,030.36 and 9,583.02 is: 14,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.40 : 31,030.36 = 9,583.02 : x
  2. Step 2: Convert to fraction form
    20,678.40/31,030.36 = 9,583.02/x
  3. Step 3: Cross multiply
    20,678.40x = 31,030.36 × 9,583.02
  4. Step 4: Simplify right side
    20,678.40x = 297,364,536.53
  5. Step 5: Solve for x
    x = 297,364,536.53/20,678.40
  6. Step 6: Final answer
    x = 14,380.44

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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.