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Finding the Fourth Proportional to 13,775.61, 19,010.36 and 7,487.98

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Solution

The fourth proportional to 13,775.61, 19,010.36 and 7,487.98 is: 10,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.61 : 19,010.36 = 7,487.98 : x
  2. Step 2: Convert to fraction form
    13,775.61/19,010.36 = 7,487.98/x
  3. Step 3: Cross multiply
    13,775.61x = 19,010.36 × 7,487.98
  4. Step 4: Simplify right side
    13,775.61x = 142,349,195.47
  5. Step 5: Solve for x
    x = 142,349,195.47/13,775.61
  6. Step 6: Final answer
    x = 10,333.42

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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.