Home / 20,802.48-31,218.30-12,025.32

Finding the Fourth Proportional to 20,802.48, 31,218.30 and 12,025.32

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Solution

The fourth proportional to 20,802.48, 31,218.30 and 12,025.32 is: 18,046.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.48 : 31,218.30 = 12,025.32 : x
  2. Step 2: Convert to fraction form
    20,802.48/31,218.30 = 12,025.32/x
  3. Step 3: Cross multiply
    20,802.48x = 31,218.30 × 12,025.32
  4. Step 4: Simplify right side
    20,802.48x = 375,410,047.36
  5. Step 5: Solve for x
    x = 375,410,047.36/20,802.48
  6. Step 6: Final answer
    x = 18,046.41

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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.