Home / 14,151.51-21,231.81-4,291.74

Finding the Fourth Proportional to 14,151.51, 21,231.81 and 4,291.74

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Solution

The fourth proportional to 14,151.51, 21,231.81 and 4,291.74 is: 6,438.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,151.51 : 21,231.81 = 4,291.74 : x
  2. Step 2: Convert to fraction form
    14,151.51/21,231.81 = 4,291.74/x
  3. Step 3: Cross multiply
    14,151.51x = 21,231.81 × 4,291.74
  4. Step 4: Simplify right side
    14,151.51x = 91,121,408.25
  5. Step 5: Solve for x
    x = 91,121,408.25/14,151.51
  6. Step 6: Final answer
    x = 6,438.99

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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.