Home / 13,851.39-20,777.49-5,417.55

Finding the Fourth Proportional to 13,851.39, 20,777.49 and 5,417.55

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Solution

The fourth proportional to 13,851.39, 20,777.49 and 5,417.55 is: 8,126.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.39 : 20,777.49 = 5,417.55 : x
  2. Step 2: Convert to fraction form
    13,851.39/20,777.49 = 5,417.55/x
  3. Step 3: Cross multiply
    13,851.39x = 20,777.49 × 5,417.55
  4. Step 4: Simplify right side
    13,851.39x = 112,563,090.95
  5. Step 5: Solve for x
    x = 112,563,090.95/13,851.39
  6. Step 6: Final answer
    x = 8,126.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.