Home / 21,161.05-31,737.02-8,668.82

Finding the Fourth Proportional to 21,161.05, 31,737.02 and 8,668.82

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Solution

The fourth proportional to 21,161.05, 31,737.02 and 8,668.82 is: 13,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.05 : 31,737.02 = 8,668.82 : x
  2. Step 2: Convert to fraction form
    21,161.05/31,737.02 = 8,668.82/x
  3. Step 3: Cross multiply
    21,161.05x = 31,737.02 × 8,668.82
  4. Step 4: Simplify right side
    21,161.05x = 275,122,549.71
  5. Step 5: Solve for x
    x = 275,122,549.71/21,161.05
  6. Step 6: Final answer
    x = 13,001.37

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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.