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Finding the Fourth Proportional to 14,904.64, 20,567.84 and 8,280.64

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Solution

The fourth proportional to 14,904.64, 20,567.84 and 8,280.64 is: 11,426.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,904.64 : 20,567.84 = 8,280.64 : x
  2. Step 2: Convert to fraction form
    14,904.64/20,567.84 = 8,280.64/x
  3. Step 3: Cross multiply
    14,904.64x = 20,567.84 × 8,280.64
  4. Step 4: Simplify right side
    14,904.64x = 170,314,878.62
  5. Step 5: Solve for x
    x = 170,314,878.62/14,904.64
  6. Step 6: Final answer
    x = 11,426.97

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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.