Home / 18,688.85-28,033.28-12,827.69

Finding the Fourth Proportional to 18,688.85, 28,033.28 and 12,827.69

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Solution

The fourth proportional to 18,688.85, 28,033.28 and 12,827.69 is: 19,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.85 : 28,033.28 = 12,827.69 : x
  2. Step 2: Convert to fraction form
    18,688.85/28,033.28 = 12,827.69/x
  3. Step 3: Cross multiply
    18,688.85x = 28,033.28 × 12,827.69
  4. Step 4: Simplify right side
    18,688.85x = 359,602,314.61
  5. Step 5: Solve for x
    x = 359,602,314.61/18,688.85
  6. Step 6: Final answer
    x = 19,241.54

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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.