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Finding the Fourth Proportional to 13,772.40, 19,006.05 and 7,484.77

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Solution

The fourth proportional to 13,772.40, 19,006.05 and 7,484.77 is: 10,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.40 : 19,006.05 = 7,484.77 : x
  2. Step 2: Convert to fraction form
    13,772.40/19,006.05 = 7,484.77/x
  3. Step 3: Cross multiply
    13,772.40x = 19,006.05 × 7,484.77
  4. Step 4: Simplify right side
    13,772.40x = 142,255,964.68
  5. Step 5: Solve for x
    x = 142,255,964.68/13,772.40
  6. Step 6: Final answer
    x = 10,329.06

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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.