Home / 27,661.61-38,172.84-15,724.94

Finding the Fourth Proportional to 27,661.61, 38,172.84 and 15,724.94

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Solution

The fourth proportional to 27,661.61, 38,172.84 and 15,724.94 is: 21,700.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.61 : 38,172.84 = 15,724.94 : x
  2. Step 2: Convert to fraction form
    27,661.61/38,172.84 = 15,724.94/x
  3. Step 3: Cross multiply
    27,661.61x = 38,172.84 × 15,724.94
  4. Step 4: Simplify right side
    27,661.61x = 600,265,618.63
  5. Step 5: Solve for x
    x = 600,265,618.63/27,661.61
  6. Step 6: Final answer
    x = 21,700.32

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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.