Home / 15,100.83-20,839.09-8,386.29

Finding the Fourth Proportional to 15,100.83, 20,839.09 and 8,386.29

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Solution

The fourth proportional to 15,100.83, 20,839.09 and 8,386.29 is: 11,573.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.83 : 20,839.09 = 8,386.29 : x
  2. Step 2: Convert to fraction form
    15,100.83/20,839.09 = 8,386.29/x
  3. Step 3: Cross multiply
    15,100.83x = 20,839.09 × 8,386.29
  4. Step 4: Simplify right side
    15,100.83x = 174,762,652.08
  5. Step 5: Solve for x
    x = 174,762,652.08/15,100.83
  6. Step 6: Final answer
    x = 11,573.05

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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.