Home / 28,355.30-39,184.26-21,269.42

Finding the Fourth Proportional to 28,355.30, 39,184.26 and 21,269.42

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Solution

The fourth proportional to 28,355.30, 39,184.26 and 21,269.42 is: 29,392.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.30 : 39,184.26 = 21,269.42 : x
  2. Step 2: Convert to fraction form
    28,355.30/39,184.26 = 21,269.42/x
  3. Step 3: Cross multiply
    28,355.30x = 39,184.26 × 21,269.42
  4. Step 4: Simplify right side
    28,355.30x = 833,426,483.33
  5. Step 5: Solve for x
    x = 833,426,483.33/28,355.30
  6. Step 6: Final answer
    x = 29,392.26

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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.