Home / 19,282.60-28,913.10-8,187.40

Finding the Fourth Proportional to 19,282.60, 28,913.10 and 8,187.40

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Solution

The fourth proportional to 19,282.60, 28,913.10 and 8,187.40 is: 12,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,282.60 : 28,913.10 = 8,187.40 : x
  2. Step 2: Convert to fraction form
    19,282.60/28,913.10 = 8,187.40/x
  3. Step 3: Cross multiply
    19,282.60x = 28,913.10 × 8,187.40
  4. Step 4: Simplify right side
    19,282.60x = 236,723,114.94
  5. Step 5: Solve for x
    x = 236,723,114.94/19,282.60
  6. Step 6: Final answer
    x = 12,276.51

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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.