Home / 21,001.23-31,491.72-7,673.76

Finding the Fourth Proportional to 21,001.23, 31,491.72 and 7,673.76

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Solution

The fourth proportional to 21,001.23, 31,491.72 and 7,673.76 is: 11,506.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.23 : 31,491.72 = 7,673.76 : x
  2. Step 2: Convert to fraction form
    21,001.23/31,491.72 = 7,673.76/x
  3. Step 3: Cross multiply
    21,001.23x = 31,491.72 × 7,673.76
  4. Step 4: Simplify right side
    21,001.23x = 241,659,901.27
  5. Step 5: Solve for x
    x = 241,659,901.27/21,001.23
  6. Step 6: Final answer
    x = 11,506.94

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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.