Home / 21,208.25-29,266.07-12,254.31

Finding the Fourth Proportional to 21,208.25, 29,266.07 and 12,254.31

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Solution

The fourth proportional to 21,208.25, 29,266.07 and 12,254.31 is: 16,910.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.25 : 29,266.07 = 12,254.31 : x
  2. Step 2: Convert to fraction form
    21,208.25/29,266.07 = 12,254.31/x
  3. Step 3: Cross multiply
    21,208.25x = 29,266.07 × 12,254.31
  4. Step 4: Simplify right side
    21,208.25x = 358,635,432.99
  5. Step 5: Solve for x
    x = 358,635,432.99/21,208.25
  6. Step 6: Final answer
    x = 16,910.18

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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.