Home / 27,739.40-38,271.02-15,794.28

Finding the Fourth Proportional to 27,739.40, 38,271.02 and 15,794.28

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Solution

The fourth proportional to 27,739.40, 38,271.02 and 15,794.28 is: 21,790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.40 : 38,271.02 = 15,794.28 : x
  2. Step 2: Convert to fraction form
    27,739.40/38,271.02 = 15,794.28/x
  3. Step 3: Cross multiply
    27,739.40x = 38,271.02 × 15,794.28
  4. Step 4: Simplify right side
    27,739.40x = 604,463,126.79
  5. Step 5: Solve for x
    x = 604,463,126.79/27,739.40
  6. Step 6: Final answer
    x = 21,790.78

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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.