Home / 12,896.43-19,345.10-4,130.21

Finding the Fourth Proportional to 12,896.43, 19,345.10 and 4,130.21

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Solution

The fourth proportional to 12,896.43, 19,345.10 and 4,130.21 is: 6,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.43 : 19,345.10 = 4,130.21 : x
  2. Step 2: Convert to fraction form
    12,896.43/19,345.10 = 4,130.21/x
  3. Step 3: Cross multiply
    12,896.43x = 19,345.10 × 4,130.21
  4. Step 4: Simplify right side
    12,896.43x = 79,899,239.07
  5. Step 5: Solve for x
    x = 79,899,239.07/12,896.43
  6. Step 6: Final answer
    x = 6,195.45

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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.