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Finding the Fourth Proportional to 29,215.36, 43,830.36 and 8,438.86

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Solution

The fourth proportional to 29,215.36, 43,830.36 and 8,438.86 is: 12,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,215.36 : 43,830.36 = 8,438.86 : x
  2. Step 2: Convert to fraction form
    29,215.36/43,830.36 = 8,438.86/x
  3. Step 3: Cross multiply
    29,215.36x = 43,830.36 × 8,438.86
  4. Step 4: Simplify right side
    29,215.36x = 369,878,271.79
  5. Step 5: Solve for x
    x = 369,878,271.79/29,215.36
  6. Step 6: Final answer
    x = 12,660.40

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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.