Home / 28,988.26-39,982.03-19,438.96

Finding the Fourth Proportional to 28,988.26, 39,982.03 and 19,438.96

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Solution

The fourth proportional to 28,988.26, 39,982.03 and 19,438.96 is: 26,811.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.26 : 39,982.03 = 19,438.96 : x
  2. Step 2: Convert to fraction form
    28,988.26/39,982.03 = 19,438.96/x
  3. Step 3: Cross multiply
    28,988.26x = 39,982.03 × 19,438.96
  4. Step 4: Simplify right side
    28,988.26x = 777,209,081.89
  5. Step 5: Solve for x
    x = 777,209,081.89/28,988.26
  6. Step 6: Final answer
    x = 26,811.17

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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.