Home / 15,100.89-20,838.94-8,386.60

Finding the Fourth Proportional to 15,100.89, 20,838.94 and 8,386.60

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Solution

The fourth proportional to 15,100.89, 20,838.94 and 8,386.60 is: 11,573.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.89 : 20,838.94 = 8,386.60 : x
  2. Step 2: Convert to fraction form
    15,100.89/20,838.94 = 8,386.60/x
  3. Step 3: Cross multiply
    15,100.89x = 20,838.94 × 8,386.60
  4. Step 4: Simplify right side
    15,100.89x = 174,767,708.08
  5. Step 5: Solve for x
    x = 174,767,708.08/15,100.89
  6. Step 6: Final answer
    x = 11,573.34

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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.