Home / 28,228.36-38,972.98-18,161.48

Finding the Fourth Proportional to 28,228.36, 38,972.98 and 18,161.48

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Solution

The fourth proportional to 28,228.36, 38,972.98 and 18,161.48 is: 25,074.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.36 : 38,972.98 = 18,161.48 : x
  2. Step 2: Convert to fraction form
    28,228.36/38,972.98 = 18,161.48/x
  3. Step 3: Cross multiply
    28,228.36x = 38,972.98 × 18,161.48
  4. Step 4: Simplify right side
    28,228.36x = 707,806,996.81
  5. Step 5: Solve for x
    x = 707,806,996.81/28,228.36
  6. Step 6: Final answer
    x = 25,074.32

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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.