Home / 27,455.10-37,888.70-15,518.49

Finding the Fourth Proportional to 27,455.10, 37,888.70 and 15,518.49

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Solution

The fourth proportional to 27,455.10, 37,888.70 and 15,518.49 is: 21,415.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,455.10 : 37,888.70 = 15,518.49 : x
  2. Step 2: Convert to fraction form
    27,455.10/37,888.70 = 15,518.49/x
  3. Step 3: Cross multiply
    27,455.10x = 37,888.70 × 15,518.49
  4. Step 4: Simplify right side
    27,455.10x = 587,975,145.03
  5. Step 5: Solve for x
    x = 587,975,145.03/27,455.10
  6. Step 6: Final answer
    x = 21,415.88

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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.