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Finding the Fourth Proportional to 37,886.80, 56,830.20 and 16,821.90

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Solution

The fourth proportional to 37,886.80, 56,830.20 and 16,821.90 is: 25,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,886.80 : 56,830.20 = 16,821.90 : x
  2. Step 2: Convert to fraction form
    37,886.80/56,830.20 = 16,821.90/x
  3. Step 3: Cross multiply
    37,886.80x = 56,830.20 × 16,821.90
  4. Step 4: Simplify right side
    37,886.80x = 955,991,941.38
  5. Step 5: Solve for x
    x = 955,991,941.38/37,886.80
  6. Step 6: Final answer
    x = 25,232.85

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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.