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Finding the Fourth Proportional to 14,108.88, 19,470.06 and 7,821.12

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Solution

The fourth proportional to 14,108.88, 19,470.06 and 7,821.12 is: 10,793.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,108.88 : 19,470.06 = 7,821.12 : x
  2. Step 2: Convert to fraction form
    14,108.88/19,470.06 = 7,821.12/x
  3. Step 3: Cross multiply
    14,108.88x = 19,470.06 × 7,821.12
  4. Step 4: Simplify right side
    14,108.88x = 152,277,675.67
  5. Step 5: Solve for x
    x = 152,277,675.67/14,108.88
  6. Step 6: Final answer
    x = 10,793.04

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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.