Home / 21,240.22-29,314.65-15,291.58

Finding the Fourth Proportional to 21,240.22, 29,314.65 and 15,291.58

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Solution

The fourth proportional to 21,240.22, 29,314.65 and 15,291.58 is: 21,104.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.22 : 29,314.65 = 15,291.58 : x
  2. Step 2: Convert to fraction form
    21,240.22/29,314.65 = 15,291.58/x
  3. Step 3: Cross multiply
    21,240.22x = 29,314.65 × 15,291.58
  4. Step 4: Simplify right side
    21,240.22x = 448,267,315.65
  5. Step 5: Solve for x
    x = 448,267,315.65/21,240.22
  6. Step 6: Final answer
    x = 21,104.65

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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.