Home / 27,865.90-38,455.54-15,290.64

Finding the Fourth Proportional to 27,865.90, 38,455.54 and 15,290.64

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Solution

The fourth proportional to 27,865.90, 38,455.54 and 15,290.64 is: 21,101.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.90 : 38,455.54 = 15,290.64 : x
  2. Step 2: Convert to fraction form
    27,865.90/38,455.54 = 15,290.64/x
  3. Step 3: Cross multiply
    27,865.90x = 38,455.54 × 15,290.64
  4. Step 4: Simplify right side
    27,865.90x = 588,009,818.15
  5. Step 5: Solve for x
    x = 588,009,818.15/27,865.90
  6. Step 6: Final answer
    x = 21,101.41

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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.