Home / 27,765.36-38,316.96-15,830.64

Finding the Fourth Proportional to 27,765.36, 38,316.96 and 15,830.64

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Solution

The fourth proportional to 27,765.36, 38,316.96 and 15,830.64 is: 21,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.36 : 38,316.96 = 15,830.64 : x
  2. Step 2: Convert to fraction form
    27,765.36/38,316.96 = 15,830.64/x
  3. Step 3: Cross multiply
    27,765.36x = 38,316.96 × 15,830.64
  4. Step 4: Simplify right side
    27,765.36x = 606,581,999.65
  5. Step 5: Solve for x
    x = 606,581,999.65/27,765.36
  6. Step 6: Final answer
    x = 21,846.72

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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.