Home / 31,790.64-43,871.76-17,643

Finding the Fourth Proportional to 31,790.64, 43,871.76 and 17,643

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Solution

The fourth proportional to 31,790.64, 43,871.76 and 17,643 is: 24,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.64 : 43,871.76 = 17,643 : x
  2. Step 2: Convert to fraction form
    31,790.64/43,871.76 = 17,643/x
  3. Step 3: Cross multiply
    31,790.64x = 43,871.76 × 17,643
  4. Step 4: Simplify right side
    31,790.64x = 774,029,461.68
  5. Step 5: Solve for x
    x = 774,029,461.68/31,790.64
  6. Step 6: Final answer
    x = 24,347.72

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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.