Home / 19,813.80-29,718.84-6,666.32

Finding the Fourth Proportional to 19,813.80, 29,718.84 and 6,666.32

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Solution

The fourth proportional to 19,813.80, 29,718.84 and 6,666.32 is: 9,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.80 : 29,718.84 = 6,666.32 : x
  2. Step 2: Convert to fraction form
    19,813.80/29,718.84 = 6,666.32/x
  3. Step 3: Cross multiply
    19,813.80x = 29,718.84 × 6,666.32
  4. Step 4: Simplify right side
    19,813.80x = 198,115,297.47
  5. Step 5: Solve for x
    x = 198,115,297.47/19,813.80
  6. Step 6: Final answer
    x = 9,998.85

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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.