Home / 21,566.25-29,762.64-12,135.42

Finding the Fourth Proportional to 21,566.25, 29,762.64 and 12,135.42

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Solution

The fourth proportional to 21,566.25, 29,762.64 and 12,135.42 is: 16,747.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,566.25 : 29,762.64 = 12,135.42 : x
  2. Step 2: Convert to fraction form
    21,566.25/29,762.64 = 12,135.42/x
  3. Step 3: Cross multiply
    21,566.25x = 29,762.64 × 12,135.42
  4. Step 4: Simplify right side
    21,566.25x = 361,182,136.71
  5. Step 5: Solve for x
    x = 361,182,136.71/21,566.25
  6. Step 6: Final answer
    x = 16,747.56

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1.5x scale

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.