Home / 20,792.63-28,697.07-13,242.21

Finding the Fourth Proportional to 20,792.63, 28,697.07 and 13,242.21

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Solution

The fourth proportional to 20,792.63, 28,697.07 and 13,242.21 is: 18,276.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.63 : 28,697.07 = 13,242.21 : x
  2. Step 2: Convert to fraction form
    20,792.63/28,697.07 = 13,242.21/x
  3. Step 3: Cross multiply
    20,792.63x = 28,697.07 × 13,242.21
  4. Step 4: Simplify right side
    20,792.63x = 380,012,561.11
  5. Step 5: Solve for x
    x = 380,012,561.11/20,792.63
  6. Step 6: Final answer
    x = 18,276.31

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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.