Home / 21,275.25-29,359.86-11,845.65

Finding the Fourth Proportional to 21,275.25, 29,359.86 and 11,845.65

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Solution

The fourth proportional to 21,275.25, 29,359.86 and 11,845.65 is: 16,347.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.25 : 29,359.86 = 11,845.65 : x
  2. Step 2: Convert to fraction form
    21,275.25/29,359.86 = 11,845.65/x
  3. Step 3: Cross multiply
    21,275.25x = 29,359.86 × 11,845.65
  4. Step 4: Simplify right side
    21,275.25x = 347,786,625.61
  5. Step 5: Solve for x
    x = 347,786,625.61/21,275.25
  6. Step 6: Final answer
    x = 16,347.01

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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.