Home / 15,156.63-20,919.38-10,185.75

Finding the Fourth Proportional to 15,156.63, 20,919.38 and 10,185.75

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Solution

The fourth proportional to 15,156.63, 20,919.38 and 10,185.75 is: 14,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.63 : 20,919.38 = 10,185.75 : x
  2. Step 2: Convert to fraction form
    15,156.63/20,919.38 = 10,185.75/x
  3. Step 3: Cross multiply
    15,156.63x = 20,919.38 × 10,185.75
  4. Step 4: Simplify right side
    15,156.63x = 213,079,523.91
  5. Step 5: Solve for x
    x = 213,079,523.91/15,156.63
  6. Step 6: Final answer
    x = 14,058.50

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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.