Home / 20,796.22-28,699.95-13,717.63

Finding the Fourth Proportional to 20,796.22, 28,699.95 and 13,717.63

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Solution

The fourth proportional to 20,796.22, 28,699.95 and 13,717.63 is: 18,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.22 : 28,699.95 = 13,717.63 : x
  2. Step 2: Convert to fraction form
    20,796.22/28,699.95 = 13,717.63/x
  3. Step 3: Cross multiply
    20,796.22x = 28,699.95 × 13,717.63
  4. Step 4: Simplify right side
    20,796.22x = 393,695,295.12
  5. Step 5: Solve for x
    x = 393,695,295.12/20,796.22
  6. Step 6: Final answer
    x = 18,931.10

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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.