Home / 15,209.07-20,997.38-10,108.71

Finding the Fourth Proportional to 15,209.07, 20,997.38 and 10,108.71

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Solution

The fourth proportional to 15,209.07, 20,997.38 and 10,108.71 is: 13,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.07 : 20,997.38 = 10,108.71 : x
  2. Step 2: Convert to fraction form
    15,209.07/20,997.38 = 10,108.71/x
  3. Step 3: Cross multiply
    15,209.07x = 20,997.38 × 10,108.71
  4. Step 4: Simplify right side
    15,209.07x = 212,256,374.64
  5. Step 5: Solve for x
    x = 212,256,374.64/15,209.07
  6. Step 6: Final answer
    x = 13,955.91

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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.