Home / 19,790.19-29,686.50-8,702.10

Finding the Fourth Proportional to 19,790.19, 29,686.50 and 8,702.10

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Solution

The fourth proportional to 19,790.19, 29,686.50 and 8,702.10 is: 13,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.19 : 29,686.50 = 8,702.10 : x
  2. Step 2: Convert to fraction form
    19,790.19/29,686.50 = 8,702.10/x
  3. Step 3: Cross multiply
    19,790.19x = 29,686.50 × 8,702.10
  4. Step 4: Simplify right side
    19,790.19x = 258,334,891.65
  5. Step 5: Solve for x
    x = 258,334,891.65/19,790.19
  6. Step 6: Final answer
    x = 13,053.68

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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.