Home / 27,985.16-38,619.42-15,409.88

Finding the Fourth Proportional to 27,985.16, 38,619.42 and 15,409.88

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Solution

The fourth proportional to 27,985.16, 38,619.42 and 15,409.88 is: 21,265.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.16 : 38,619.42 = 15,409.88 : x
  2. Step 2: Convert to fraction form
    27,985.16/38,619.42 = 15,409.88/x
  3. Step 3: Cross multiply
    27,985.16x = 38,619.42 × 15,409.88
  4. Step 4: Simplify right side
    27,985.16x = 595,120,627.87
  5. Step 5: Solve for x
    x = 595,120,627.87/27,985.16
  6. Step 6: Final answer
    x = 21,265.58

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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.