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Finding the Fourth Proportional to 14,412.70, 19,889.47 and 8,039.29

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Solution

The fourth proportional to 14,412.70, 19,889.47 and 8,039.29 is: 11,094.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,412.70 : 19,889.47 = 8,039.29 : x
  2. Step 2: Convert to fraction form
    14,412.70/19,889.47 = 8,039.29/x
  3. Step 3: Cross multiply
    14,412.70x = 19,889.47 × 8,039.29
  4. Step 4: Simplify right side
    14,412.70x = 159,897,217.28
  5. Step 5: Solve for x
    x = 159,897,217.28/14,412.70
  6. Step 6: Final answer
    x = 11,094.19

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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.