Home / 27,778.64-38,334.48-15,678.32

Finding the Fourth Proportional to 27,778.64, 38,334.48 and 15,678.32

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Solution

The fourth proportional to 27,778.64, 38,334.48 and 15,678.32 is: 21,636.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.64 : 38,334.48 = 15,678.32 : x
  2. Step 2: Convert to fraction form
    27,778.64/38,334.48 = 15,678.32/x
  3. Step 3: Cross multiply
    27,778.64x = 38,334.48 × 15,678.32
  4. Step 4: Simplify right side
    27,778.64x = 601,020,244.47
  5. Step 5: Solve for x
    x = 601,020,244.47/27,778.64
  6. Step 6: Final answer
    x = 21,636.06

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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.