Home / 19,234.60-28,830.30-8,139.40

Finding the Fourth Proportional to 19,234.60, 28,830.30 and 8,139.40

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Solution

The fourth proportional to 19,234.60, 28,830.30 and 8,139.40 is: 12,199.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,234.60 : 28,830.30 = 8,139.40 : x
  2. Step 2: Convert to fraction form
    19,234.60/28,830.30 = 8,139.40/x
  3. Step 3: Cross multiply
    19,234.60x = 28,830.30 × 8,139.40
  4. Step 4: Simplify right side
    19,234.60x = 234,661,343.82
  5. Step 5: Solve for x
    x = 234,661,343.82/19,234.60
  6. Step 6: Final answer
    x = 12,199.96

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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.