Home / 19,689.56-29,553.77-8,603.90

Finding the Fourth Proportional to 19,689.56, 29,553.77 and 8,603.90

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Solution

The fourth proportional to 19,689.56, 29,553.77 and 8,603.90 is: 12,914.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.56 : 29,553.77 = 8,603.90 : x
  2. Step 2: Convert to fraction form
    19,689.56/29,553.77 = 8,603.90/x
  3. Step 3: Cross multiply
    19,689.56x = 29,553.77 × 8,603.90
  4. Step 4: Simplify right side
    19,689.56x = 254,277,555.44
  5. Step 5: Solve for x
    x = 254,277,555.44/19,689.56
  6. Step 6: Final answer
    x = 12,914.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.