Home / 15,290.07-21,080.57-10,255.11

Finding the Fourth Proportional to 15,290.07, 21,080.57 and 10,255.11

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Solution

The fourth proportional to 15,290.07, 21,080.57 and 10,255.11 is: 14,138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.07 : 21,080.57 = 10,255.11 : x
  2. Step 2: Convert to fraction form
    15,290.07/21,080.57 = 10,255.11/x
  3. Step 3: Cross multiply
    15,290.07x = 21,080.57 × 10,255.11
  4. Step 4: Simplify right side
    15,290.07x = 216,183,512.94
  5. Step 5: Solve for x
    x = 216,183,512.94/15,290.07
  6. Step 6: Final answer
    x = 14,138.82

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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.