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Finding the Fourth Proportional to 12,803.34, 17,671.96 and 8,339.34

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Solution

The fourth proportional to 12,803.34, 17,671.96 and 8,339.34 is: 11,510.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.34 : 17,671.96 = 8,339.34 : x
  2. Step 2: Convert to fraction form
    12,803.34/17,671.96 = 8,339.34/x
  3. Step 3: Cross multiply
    12,803.34x = 17,671.96 × 8,339.34
  4. Step 4: Simplify right side
    12,803.34x = 147,372,482.91
  5. Step 5: Solve for x
    x = 147,372,482.91/12,803.34
  6. Step 6: Final answer
    x = 11,510.47

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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.