Home / 13,803.66-19,046.51-8,140.21

Finding the Fourth Proportional to 13,803.66, 19,046.51 and 8,140.21

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Solution

The fourth proportional to 13,803.66, 19,046.51 and 8,140.21 is: 11,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.66 : 19,046.51 = 8,140.21 : x
  2. Step 2: Convert to fraction form
    13,803.66/19,046.51 = 8,140.21/x
  3. Step 3: Cross multiply
    13,803.66x = 19,046.51 × 8,140.21
  4. Step 4: Simplify right side
    13,803.66x = 155,042,533.38
  5. Step 5: Solve for x
    x = 155,042,533.38/13,803.66
  6. Step 6: Final answer
    x = 11,231.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.