Home / 20,751.54-31,127.85-6,712.08

Finding the Fourth Proportional to 20,751.54, 31,127.85 and 6,712.08

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Solution

The fourth proportional to 20,751.54, 31,127.85 and 6,712.08 is: 10,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.54 : 31,127.85 = 6,712.08 : x
  2. Step 2: Convert to fraction form
    20,751.54/31,127.85 = 6,712.08/x
  3. Step 3: Cross multiply
    20,751.54x = 31,127.85 × 6,712.08
  4. Step 4: Simplify right side
    20,751.54x = 208,932,619.43
  5. Step 5: Solve for x
    x = 208,932,619.43/20,751.54
  6. Step 6: Final answer
    x = 10,068.29

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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.