Home / 14,939.87-20,617.16-8,225.63

Finding the Fourth Proportional to 14,939.87, 20,617.16 and 8,225.63

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Solution

The fourth proportional to 14,939.87, 20,617.16 and 8,225.63 is: 11,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.87 : 20,617.16 = 8,225.63 : x
  2. Step 2: Convert to fraction form
    14,939.87/20,617.16 = 8,225.63/x
  3. Step 3: Cross multiply
    14,939.87x = 20,617.16 × 8,225.63
  4. Step 4: Simplify right side
    14,939.87x = 169,589,062.91
  5. Step 5: Solve for x
    x = 169,589,062.91/14,939.87
  6. Step 6: Final answer
    x = 11,351.45

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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.