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Finding the Fourth Proportional to 28,700.66, 43,050.99 and 8,979.32

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Solution

The fourth proportional to 28,700.66, 43,050.99 and 8,979.32 is: 13,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700.66 : 43,050.99 = 8,979.32 : x
  2. Step 2: Convert to fraction form
    28,700.66/43,050.99 = 8,979.32/x
  3. Step 3: Cross multiply
    28,700.66x = 43,050.99 × 8,979.32
  4. Step 4: Simplify right side
    28,700.66x = 386,568,615.53
  5. Step 5: Solve for x
    x = 386,568,615.53/28,700.66
  6. Step 6: Final answer
    x = 13,468.98

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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.