Home / 27,765.77-38,316.71-15,665.45

Finding the Fourth Proportional to 27,765.77, 38,316.71 and 15,665.45

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Solution

The fourth proportional to 27,765.77, 38,316.71 and 15,665.45 is: 21,618.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.77 : 38,316.71 = 15,665.45 : x
  2. Step 2: Convert to fraction form
    27,765.77/38,316.71 = 15,665.45/x
  3. Step 3: Cross multiply
    27,765.77x = 38,316.71 × 15,665.45
  4. Step 4: Simplify right side
    27,765.77x = 600,248,352.25
  5. Step 5: Solve for x
    x = 600,248,352.25/27,765.77
  6. Step 6: Final answer
    x = 21,618.29

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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.