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Finding the Fourth Proportional to 14,416.66, 19,894.84 and 9,115.84

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Solution

The fourth proportional to 14,416.66, 19,894.84 and 9,115.84 is: 12,579.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,416.66 : 19,894.84 = 9,115.84 : x
  2. Step 2: Convert to fraction form
    14,416.66/19,894.84 = 9,115.84/x
  3. Step 3: Cross multiply
    14,416.66x = 19,894.84 × 9,115.84
  4. Step 4: Simplify right side
    14,416.66x = 181,358,178.27
  5. Step 5: Solve for x
    x = 181,358,178.27/14,416.66
  6. Step 6: Final answer
    x = 12,579.76

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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.