Home / 20,720.42-28,585.62-14,436.44

Finding the Fourth Proportional to 20,720.42, 28,585.62 and 14,436.44

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Solution

The fourth proportional to 20,720.42, 28,585.62 and 14,436.44 is: 19,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.42 : 28,585.62 = 14,436.44 : x
  2. Step 2: Convert to fraction form
    20,720.42/28,585.62 = 14,436.44/x
  3. Step 3: Cross multiply
    20,720.42x = 28,585.62 × 14,436.44
  4. Step 4: Simplify right side
    20,720.42x = 412,674,587.99
  5. Step 5: Solve for x
    x = 412,674,587.99/20,720.42
  6. Step 6: Final answer
    x = 19,916.32

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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.