Home / 15,100.60-20,839.79-8,386.23

Finding the Fourth Proportional to 15,100.60, 20,839.79 and 8,386.23

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Solution

The fourth proportional to 15,100.60, 20,839.79 and 8,386.23 is: 11,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.60 : 20,839.79 = 8,386.23 : x
  2. Step 2: Convert to fraction form
    15,100.60/20,839.79 = 8,386.23/x
  3. Step 3: Cross multiply
    15,100.60x = 20,839.79 × 8,386.23
  4. Step 4: Simplify right side
    15,100.60x = 174,767,272.09
  5. Step 5: Solve for x
    x = 174,767,272.09/15,100.60
  6. Step 6: Final answer
    x = 11,573.53

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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.