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Finding the Fourth Proportional to 21,482.10, 32,211.54 and 8,330.94

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Solution

The fourth proportional to 21,482.10, 32,211.54 and 8,330.94 is: 12,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.10 : 32,211.54 = 8,330.94 : x
  2. Step 2: Convert to fraction form
    21,482.10/32,211.54 = 8,330.94/x
  3. Step 3: Cross multiply
    21,482.10x = 32,211.54 × 8,330.94
  4. Step 4: Simplify right side
    21,482.10x = 268,352,407.05
  5. Step 5: Solve for x
    x = 268,352,407.05/21,482.10
  6. Step 6: Final answer
    x = 12,491.91

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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.