Home / 20,317.62-28,038.39-11,364.55

Finding the Fourth Proportional to 20,317.62, 28,038.39 and 11,364.55

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Solution

The fourth proportional to 20,317.62, 28,038.39 and 11,364.55 is: 15,683.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.62 : 28,038.39 = 11,364.55 : x
  2. Step 2: Convert to fraction form
    20,317.62/28,038.39 = 11,364.55/x
  3. Step 3: Cross multiply
    20,317.62x = 28,038.39 × 11,364.55
  4. Step 4: Simplify right side
    20,317.62x = 318,643,685.07
  5. Step 5: Solve for x
    x = 318,643,685.07/20,317.62
  6. Step 6: Final answer
    x = 15,683.12

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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.