Home / 14,427.48-19,909.89-8,139.81

Finding the Fourth Proportional to 14,427.48, 19,909.89 and 8,139.81

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Solution

The fourth proportional to 14,427.48, 19,909.89 and 8,139.81 is: 11,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,427.48 : 19,909.89 = 8,139.81 : x
  2. Step 2: Convert to fraction form
    14,427.48/19,909.89 = 8,139.81/x
  3. Step 3: Cross multiply
    14,427.48x = 19,909.89 × 8,139.81
  4. Step 4: Simplify right side
    14,427.48x = 162,062,721.72
  5. Step 5: Solve for x
    x = 162,062,721.72/14,427.48
  6. Step 6: Final answer
    x = 11,232.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.