Home / 27,809.32-38,379.61-15,874.45

Finding the Fourth Proportional to 27,809.32, 38,379.61 and 15,874.45

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Solution

The fourth proportional to 27,809.32, 38,379.61 and 15,874.45 is: 21,908.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,809.32 : 38,379.61 = 15,874.45 : x
  2. Step 2: Convert to fraction form
    27,809.32/38,379.61 = 15,874.45/x
  3. Step 3: Cross multiply
    27,809.32x = 38,379.61 × 15,874.45
  4. Step 4: Simplify right side
    27,809.32x = 609,254,928.69
  5. Step 5: Solve for x
    x = 609,254,928.69/27,809.32
  6. Step 6: Final answer
    x = 21,908.30

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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.