Home / 21,187.96-31,784.10-7,333.72

Finding the Fourth Proportional to 21,187.96, 31,784.10 and 7,333.72

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Solution

The fourth proportional to 21,187.96, 31,784.10 and 7,333.72 is: 11,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.96 : 31,784.10 = 7,333.72 : x
  2. Step 2: Convert to fraction form
    21,187.96/31,784.10 = 7,333.72/x
  3. Step 3: Cross multiply
    21,187.96x = 31,784.10 × 7,333.72
  4. Step 4: Simplify right side
    21,187.96x = 233,095,689.85
  5. Step 5: Solve for x
    x = 233,095,689.85/21,187.96
  6. Step 6: Final answer
    x = 11,001.33

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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.