Home / 27,667.64-38,178.68-15,730.32

Finding the Fourth Proportional to 27,667.64, 38,178.68 and 15,730.32

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Solution

The fourth proportional to 27,667.64, 38,178.68 and 15,730.32 is: 21,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,667.64 : 38,178.68 = 15,730.32 : x
  2. Step 2: Convert to fraction form
    27,667.64/38,178.68 = 15,730.32/x
  3. Step 3: Cross multiply
    27,667.64x = 38,178.68 × 15,730.32
  4. Step 4: Simplify right side
    27,667.64x = 600,562,853.58
  5. Step 5: Solve for x
    x = 600,562,853.58/27,667.64
  6. Step 6: Final answer
    x = 21,706.33

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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.