Home / 27,977.68-38,611.38-15,404.68

Finding the Fourth Proportional to 27,977.68, 38,611.38 and 15,404.68

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Solution

The fourth proportional to 27,977.68, 38,611.38 and 15,404.68 is: 21,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.68 : 38,611.38 = 15,404.68 : x
  2. Step 2: Convert to fraction form
    27,977.68/38,611.38 = 15,404.68/x
  3. Step 3: Cross multiply
    27,977.68x = 38,611.38 × 15,404.68
  4. Step 4: Simplify right side
    27,977.68x = 594,795,953.26
  5. Step 5: Solve for x
    x = 594,795,953.26/27,977.68
  6. Step 6: Final answer
    x = 21,259.66

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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.