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Finding the Fourth Proportional to 13,772.49, 19,006.07 and 7,484.87

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Solution

The fourth proportional to 13,772.49, 19,006.07 and 7,484.87 is: 10,329.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.49 : 19,006.07 = 7,484.87 : x
  2. Step 2: Convert to fraction form
    13,772.49/19,006.07 = 7,484.87/x
  3. Step 3: Cross multiply
    13,772.49x = 19,006.07 × 7,484.87
  4. Step 4: Simplify right side
    13,772.49x = 142,257,830.71
  5. Step 5: Solve for x
    x = 142,257,830.71/13,772.49
  6. Step 6: Final answer
    x = 10,329.13

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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.