Home / 31,362.40-43,300.38-19,438.39

Finding the Fourth Proportional to 31,362.40, 43,300.38 and 19,438.39

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Solution

The fourth proportional to 31,362.40, 43,300.38 and 19,438.39 is: 26,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,362.40 : 43,300.38 = 19,438.39 : x
  2. Step 2: Convert to fraction form
    31,362.40/43,300.38 = 19,438.39/x
  3. Step 3: Cross multiply
    31,362.40x = 43,300.38 × 19,438.39
  4. Step 4: Simplify right side
    31,362.40x = 841,689,673.59
  5. Step 5: Solve for x
    x = 841,689,673.59/31,362.40
  6. Step 6: Final answer
    x = 26,837.54

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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.