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Finding the Fourth Proportional to 21,898.60, 32,847.90 and 8,045.80

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Solution

The fourth proportional to 21,898.60, 32,847.90 and 8,045.80 is: 12,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.60 : 32,847.90 = 8,045.80 : x
  2. Step 2: Convert to fraction form
    21,898.60/32,847.90 = 8,045.80/x
  3. Step 3: Cross multiply
    21,898.60x = 32,847.90 × 8,045.80
  4. Step 4: Simplify right side
    21,898.60x = 264,287,633.82
  5. Step 5: Solve for x
    x = 264,287,633.82/21,898.60
  6. Step 6: Final answer
    x = 12,068.70

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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.