Home / 14,178.19-21,268.74-5,420.47

Finding the Fourth Proportional to 14,178.19, 21,268.74 and 5,420.47

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Solution

The fourth proportional to 14,178.19, 21,268.74 and 5,420.47 is: 8,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.19 : 21,268.74 = 5,420.47 : x
  2. Step 2: Convert to fraction form
    14,178.19/21,268.74 = 5,420.47/x
  3. Step 3: Cross multiply
    14,178.19x = 21,268.74 × 5,420.47
  4. Step 4: Simplify right side
    14,178.19x = 115,286,567.11
  5. Step 5: Solve for x
    x = 115,286,567.11/14,178.19
  6. Step 6: Final answer
    x = 8,131.26

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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.