Home / 20,678.97-31,000.94-9,430.29

Finding the Fourth Proportional to 20,678.97, 31,000.94 and 9,430.29

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Solution

The fourth proportional to 20,678.97, 31,000.94 and 9,430.29 is: 14,137.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.97 : 31,000.94 = 9,430.29 : x
  2. Step 2: Convert to fraction form
    20,678.97/31,000.94 = 9,430.29/x
  3. Step 3: Cross multiply
    20,678.97x = 31,000.94 × 9,430.29
  4. Step 4: Simplify right side
    20,678.97x = 292,347,810.52
  5. Step 5: Solve for x
    x = 292,347,810.52/20,678.97
  6. Step 6: Final answer
    x = 14,137.44

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1.5x scale

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.