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Finding the Fourth Proportional to 18,956.86, 28,435.29 and 6,476.99

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Solution

The fourth proportional to 18,956.86, 28,435.29 and 6,476.99 is: 9,715.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,956.86 : 28,435.29 = 6,476.99 : x
  2. Step 2: Convert to fraction form
    18,956.86/28,435.29 = 6,476.99/x
  3. Step 3: Cross multiply
    18,956.86x = 28,435.29 × 6,476.99
  4. Step 4: Simplify right side
    18,956.86x = 184,175,029.81
  5. Step 5: Solve for x
    x = 184,175,029.81/18,956.86
  6. Step 6: Final answer
    x = 9,715.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.