Home / 20,695.19-31,018.46-9,578.39

Finding the Fourth Proportional to 20,695.19, 31,018.46 and 9,578.39

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Solution

The fourth proportional to 20,695.19, 31,018.46 and 9,578.39 is: 14,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.19 : 31,018.46 = 9,578.39 : x
  2. Step 2: Convert to fraction form
    20,695.19/31,018.46 = 9,578.39/x
  3. Step 3: Cross multiply
    20,695.19x = 31,018.46 × 9,578.39
  4. Step 4: Simplify right side
    20,695.19x = 297,107,008.57
  5. Step 5: Solve for x
    x = 297,107,008.57/20,695.19
  6. Step 6: Final answer
    x = 14,356.33

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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.