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Finding the Fourth Proportional to 13,889.75, 19,167.86 and 7,602.13

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Solution

The fourth proportional to 13,889.75, 19,167.86 and 7,602.13 is: 10,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.75 : 19,167.86 = 7,602.13 : x
  2. Step 2: Convert to fraction form
    13,889.75/19,167.86 = 7,602.13/x
  3. Step 3: Cross multiply
    13,889.75x = 19,167.86 × 7,602.13
  4. Step 4: Simplify right side
    13,889.75x = 145,716,429.69
  5. Step 5: Solve for x
    x = 145,716,429.69/13,889.75
  6. Step 6: Final answer
    x = 10,490.93

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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.