Home / 38,278.25-52,825.74-21,284.23

Finding the Fourth Proportional to 38,278.25, 52,825.74 and 21,284.23

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Solution

The fourth proportional to 38,278.25, 52,825.74 and 21,284.23 is: 29,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,278.25 : 52,825.74 = 21,284.23 : x
  2. Step 2: Convert to fraction form
    38,278.25/52,825.74 = 21,284.23/x
  3. Step 3: Cross multiply
    38,278.25x = 52,825.74 × 21,284.23
  4. Step 4: Simplify right side
    38,278.25x = 1,124,355,093.66
  5. Step 5: Solve for x
    x = 1,124,355,093.66/38,278.25
  6. Step 6: Final answer
    x = 29,373.21

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Double scale
Find fourth proportional to 38,279.25, 52,827.12 and 21,285.23
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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.