Home / 31,266.30-43,143.39-19,172.19

Finding the Fourth Proportional to 31,266.30, 43,143.39 and 19,172.19

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Solution

The fourth proportional to 31,266.30, 43,143.39 and 19,172.19 is: 26,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,266.30 : 43,143.39 = 19,172.19 : x
  2. Step 2: Convert to fraction form
    31,266.30/43,143.39 = 19,172.19/x
  3. Step 3: Cross multiply
    31,266.30x = 43,143.39 × 19,172.19
  4. Step 4: Simplify right side
    31,266.30x = 827,153,270.32
  5. Step 5: Solve for x
    x = 827,153,270.32/31,266.30
  6. Step 6: Final answer
    x = 26,455.11

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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.