Home / 20,999.54-31,501.13-7,676.19

Finding the Fourth Proportional to 20,999.54, 31,501.13 and 7,676.19

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Solution

The fourth proportional to 20,999.54, 31,501.13 and 7,676.19 is: 11,514.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.54 : 31,501.13 = 7,676.19 : x
  2. Step 2: Convert to fraction form
    20,999.54/31,501.13 = 7,676.19/x
  3. Step 3: Cross multiply
    20,999.54x = 31,501.13 × 7,676.19
  4. Step 4: Simplify right side
    20,999.54x = 241,808,620.71
  5. Step 5: Solve for x
    x = 241,808,620.71/20,999.54
  6. Step 6: Final answer
    x = 11,514.95

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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.