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Finding the Fourth Proportional to 19,406.40, 29,100 and 9,011.52

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Solution

The fourth proportional to 19,406.40, 29,100 and 9,011.52 is: 13,512.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.40 : 29,100 = 9,011.52 : x
  2. Step 2: Convert to fraction form
    19,406.40/29,100 = 9,011.52/x
  3. Step 3: Cross multiply
    19,406.40x = 29,100 × 9,011.52
  4. Step 4: Simplify right side
    19,406.40x = 262,235,232
  5. Step 5: Solve for x
    x = 262,235,232/19,406.40
  6. Step 6: Final answer
    x = 13,512.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.