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Finding the Fourth Proportional to 19,336.40, 29,005.95 and 7,648.10

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Solution

The fourth proportional to 19,336.40, 29,005.95 and 7,648.10 is: 11,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,336.40 : 29,005.95 = 7,648.10 : x
  2. Step 2: Convert to fraction form
    19,336.40/29,005.95 = 7,648.10/x
  3. Step 3: Cross multiply
    19,336.40x = 29,005.95 × 7,648.10
  4. Step 4: Simplify right side
    19,336.40x = 221,840,406.20
  5. Step 5: Solve for x
    x = 221,840,406.20/19,336.40
  6. Step 6: Final answer
    x = 11,472.68

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1.5x scale

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.