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Finding the Fourth Proportional to 14,064.01, 21,060.32 and 8,438.15

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Solution

The fourth proportional to 14,064.01, 21,060.32 and 8,438.15 is: 12,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,064.01 : 21,060.32 = 8,438.15 : x
  2. Step 2: Convert to fraction form
    14,064.01/21,060.32 = 8,438.15/x
  3. Step 3: Cross multiply
    14,064.01x = 21,060.32 × 8,438.15
  4. Step 4: Simplify right side
    14,064.01x = 177,710,149.67
  5. Step 5: Solve for x
    x = 177,710,149.67/14,064.01
  6. Step 6: Final answer
    x = 12,635.81

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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.