Home / 15,077.09-20,805.89-9,107.72

Finding the Fourth Proportional to 15,077.09, 20,805.89 and 9,107.72

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Solution

The fourth proportional to 15,077.09, 20,805.89 and 9,107.72 is: 12,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.09 : 20,805.89 = 9,107.72 : x
  2. Step 2: Convert to fraction form
    15,077.09/20,805.89 = 9,107.72/x
  3. Step 3: Cross multiply
    15,077.09x = 20,805.89 × 9,107.72
  4. Step 4: Simplify right side
    15,077.09x = 189,494,116.02
  5. Step 5: Solve for x
    x = 189,494,116.02/15,077.09
  6. Step 6: Final answer
    x = 12,568.35

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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.