Home / 27,987-38,622.06-15,412.56

Finding the Fourth Proportional to 27,987, 38,622.06 and 15,412.56

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Solution

The fourth proportional to 27,987, 38,622.06 and 15,412.56 is: 21,269.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987 : 38,622.06 = 15,412.56 : x
  2. Step 2: Convert to fraction form
    27,987/38,622.06 = 15,412.56/x
  3. Step 3: Cross multiply
    27,987x = 38,622.06 × 15,412.56
  4. Step 4: Simplify right side
    27,987x = 595,264,817.07
  5. Step 5: Solve for x
    x = 595,264,817.07/27,987
  6. Step 6: Final answer
    x = 21,269.33

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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.