Home / 27,808.81-38,378.91-15,873.94

Finding the Fourth Proportional to 27,808.81, 38,378.91 and 15,873.94

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Solution

The fourth proportional to 27,808.81, 38,378.91 and 15,873.94 is: 21,907.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.81 : 38,378.91 = 15,873.94 : x
  2. Step 2: Convert to fraction form
    27,808.81/38,378.91 = 15,873.94/x
  3. Step 3: Cross multiply
    27,808.81x = 38,378.91 × 15,873.94
  4. Step 4: Simplify right side
    27,808.81x = 609,224,730.05
  5. Step 5: Solve for x
    x = 609,224,730.05/27,808.81
  6. Step 6: Final answer
    x = 21,907.61

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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.