Home / 19,980.69-29,942.43-14,674.08

Finding the Fourth Proportional to 19,980.69, 29,942.43 and 14,674.08

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Solution

The fourth proportional to 19,980.69, 29,942.43 and 14,674.08 is: 21,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.69 : 29,942.43 = 14,674.08 : x
  2. Step 2: Convert to fraction form
    19,980.69/29,942.43 = 14,674.08/x
  3. Step 3: Cross multiply
    19,980.69x = 29,942.43 × 14,674.08
  4. Step 4: Simplify right side
    19,980.69x = 439,377,625.86
  5. Step 5: Solve for x
    x = 439,377,625.86/19,980.69
  6. Step 6: Final answer
    x = 21,990.11

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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.