Home / 15,703.24-21,670.60-8,629.82

Finding the Fourth Proportional to 15,703.24, 21,670.60 and 8,629.82

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Solution

The fourth proportional to 15,703.24, 21,670.60 and 8,629.82 is: 11,909.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.24 : 21,670.60 = 8,629.82 : x
  2. Step 2: Convert to fraction form
    15,703.24/21,670.60 = 8,629.82/x
  3. Step 3: Cross multiply
    15,703.24x = 21,670.60 × 8,629.82
  4. Step 4: Simplify right side
    15,703.24x = 187,013,377.29
  5. Step 5: Solve for x
    x = 187,013,377.29/15,703.24
  6. Step 6: Final answer
    x = 11,909.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.