Home / 20,317.84-28,038-11,366.08

Finding the Fourth Proportional to 20,317.84, 28,038 and 11,366.08

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Solution

The fourth proportional to 20,317.84, 28,038 and 11,366.08 is: 15,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.84 : 28,038 = 11,366.08 : x
  2. Step 2: Convert to fraction form
    20,317.84/28,038 = 11,366.08/x
  3. Step 3: Cross multiply
    20,317.84x = 28,038 × 11,366.08
  4. Step 4: Simplify right side
    20,317.84x = 318,682,151.04
  5. Step 5: Solve for x
    x = 318,682,151.04/20,317.84
  6. Step 6: Final answer
    x = 15,684.84

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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.