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Finding the Fourth Proportional to 14,000.30, 21,000.30 and 4,139.76

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Solution

The fourth proportional to 14,000.30, 21,000.30 and 4,139.76 is: 6,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.30 : 21,000.30 = 4,139.76 : x
  2. Step 2: Convert to fraction form
    14,000.30/21,000.30 = 4,139.76/x
  3. Step 3: Cross multiply
    14,000.30x = 21,000.30 × 4,139.76
  4. Step 4: Simplify right side
    14,000.30x = 86,936,201.93
  5. Step 5: Solve for x
    x = 86,936,201.93/14,000.30
  6. Step 6: Final answer
    x = 6,209.60

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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.