Home / 13,260.02-19,861.23-12,891.38

Finding the Fourth Proportional to 13,260.02, 19,861.23 and 12,891.38

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Solution

The fourth proportional to 13,260.02, 19,861.23 and 12,891.38 is: 19,309.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260.02 : 19,861.23 = 12,891.38 : x
  2. Step 2: Convert to fraction form
    13,260.02/19,861.23 = 12,891.38/x
  3. Step 3: Cross multiply
    13,260.02x = 19,861.23 × 12,891.38
  4. Step 4: Simplify right side
    13,260.02x = 256,038,663.20
  5. Step 5: Solve for x
    x = 256,038,663.20/13,260.02
  6. Step 6: Final answer
    x = 19,309.07

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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.