Home / 31,606.40-43,615.08-19,669.36

Finding the Fourth Proportional to 31,606.40, 43,615.08 and 19,669.36

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Solution

The fourth proportional to 31,606.40, 43,615.08 and 19,669.36 is: 27,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,606.40 : 43,615.08 = 19,669.36 : x
  2. Step 2: Convert to fraction form
    31,606.40/43,615.08 = 19,669.36/x
  3. Step 3: Cross multiply
    31,606.40x = 43,615.08 × 19,669.36
  4. Step 4: Simplify right side
    31,606.40x = 857,880,709.95
  5. Step 5: Solve for x
    x = 857,880,709.95/31,606.40
  6. Step 6: Final answer
    x = 27,142.63

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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.