Home / 8,421.04-12,631.64-5,517.80

Finding the Fourth Proportional to 8,421.04, 12,631.64 and 5,517.80

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Solution

The fourth proportional to 8,421.04, 12,631.64 and 5,517.80 is: 8,276.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.04 : 12,631.64 = 5,517.80 : x
  2. Step 2: Convert to fraction form
    8,421.04/12,631.64 = 5,517.80/x
  3. Step 3: Cross multiply
    8,421.04x = 12,631.64 × 5,517.80
  4. Step 4: Simplify right side
    8,421.04x = 69,698,863.19
  5. Step 5: Solve for x
    x = 69,698,863.19/8,421.04
  6. Step 6: Final answer
    x = 8,276.75

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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.