Home / 30,826.98-42,542.01-18,896.90

Finding the Fourth Proportional to 30,826.98, 42,542.01 and 18,896.90

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Solution

The fourth proportional to 30,826.98, 42,542.01 and 18,896.90 is: 26,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,826.98 : 42,542.01 = 18,896.90 : x
  2. Step 2: Convert to fraction form
    30,826.98/42,542.01 = 18,896.90/x
  3. Step 3: Cross multiply
    30,826.98x = 42,542.01 × 18,896.90
  4. Step 4: Simplify right side
    30,826.98x = 803,911,896.06
  5. Step 5: Solve for x
    x = 803,911,896.06/30,826.98
  6. Step 6: Final answer
    x = 26,078.19

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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.