Home / 14,100.30-21,150.45-12,890.70

Finding the Fourth Proportional to 14,100.30, 21,150.45 and 12,890.70

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Solution

The fourth proportional to 14,100.30, 21,150.45 and 12,890.70 is: 19,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,100.30 : 21,150.45 = 12,890.70 : x
  2. Step 2: Convert to fraction form
    14,100.30/21,150.45 = 12,890.70/x
  3. Step 3: Cross multiply
    14,100.30x = 21,150.45 × 12,890.70
  4. Step 4: Simplify right side
    14,100.30x = 272,644,105.82
  5. Step 5: Solve for x
    x = 272,644,105.82/14,100.30
  6. Step 6: Final answer
    x = 19,336.05

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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.