Home / 27,986.88-38,621.89-15,411.63

Finding the Fourth Proportional to 27,986.88, 38,621.89 and 15,411.63

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Solution

The fourth proportional to 27,986.88, 38,621.89 and 15,411.63 is: 21,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.88 : 38,621.89 = 15,411.63 : x
  2. Step 2: Convert to fraction form
    27,986.88/38,621.89 = 15,411.63/x
  3. Step 3: Cross multiply
    27,986.88x = 38,621.89 × 15,411.63
  4. Step 4: Simplify right side
    27,986.88x = 595,226,278.58
  5. Step 5: Solve for x
    x = 595,226,278.58/27,986.88
  6. Step 6: Final answer
    x = 21,268.05

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Double scale
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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.