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Finding the Fourth Proportional to 14,419.51, 19,899.40 and 8,369.28

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Solution

The fourth proportional to 14,419.51, 19,899.40 and 8,369.28 is: 11,549.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.51 : 19,899.40 = 8,369.28 : x
  2. Step 2: Convert to fraction form
    14,419.51/19,899.40 = 8,369.28/x
  3. Step 3: Cross multiply
    14,419.51x = 19,899.40 × 8,369.28
  4. Step 4: Simplify right side
    14,419.51x = 166,543,719.82
  5. Step 5: Solve for x
    x = 166,543,719.82/14,419.51
  6. Step 6: Final answer
    x = 11,549.89

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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.