Home / 27,986.34-38,621.12-15,411.08

Finding the Fourth Proportional to 27,986.34, 38,621.12 and 15,411.08

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Solution

The fourth proportional to 27,986.34, 38,621.12 and 15,411.08 is: 21,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.34 : 38,621.12 = 15,411.08 : x
  2. Step 2: Convert to fraction form
    27,986.34/38,621.12 = 15,411.08/x
  3. Step 3: Cross multiply
    27,986.34x = 38,621.12 × 15,411.08
  4. Step 4: Simplify right side
    27,986.34x = 595,193,170.01
  5. Step 5: Solve for x
    x = 595,193,170.01/27,986.34
  6. Step 6: Final answer
    x = 21,267.27

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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.