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Finding the Fourth Proportional to 13,887, 19,164.47 and 7,599.78

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Solution

The fourth proportional to 13,887, 19,164.47 and 7,599.78 is: 10,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887 : 19,164.47 = 7,599.78 : x
  2. Step 2: Convert to fraction form
    13,887/19,164.47 = 7,599.78/x
  3. Step 3: Cross multiply
    13,887x = 19,164.47 × 7,599.78
  4. Step 4: Simplify right side
    13,887x = 145,645,717.82
  5. Step 5: Solve for x
    x = 145,645,717.82/13,887
  6. Step 6: Final answer
    x = 10,487.92

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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.