Home / 27,643.91-38,149.58-15,707.75

Finding the Fourth Proportional to 27,643.91, 38,149.58 and 15,707.75

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Solution

The fourth proportional to 27,643.91, 38,149.58 and 15,707.75 is: 21,677.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.91 : 38,149.58 = 15,707.75 : x
  2. Step 2: Convert to fraction form
    27,643.91/38,149.58 = 15,707.75/x
  3. Step 3: Cross multiply
    27,643.91x = 38,149.58 × 15,707.75
  4. Step 4: Simplify right side
    27,643.91x = 599,243,986.71
  5. Step 5: Solve for x
    x = 599,243,986.71/27,643.91
  6. Step 6: Final answer
    x = 21,677.25

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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.