Home / 27,615.81-38,107.48-15,515.35

Finding the Fourth Proportional to 27,615.81, 38,107.48 and 15,515.35

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Solution

The fourth proportional to 27,615.81, 38,107.48 and 15,515.35 is: 21,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.81 : 38,107.48 = 15,515.35 : x
  2. Step 2: Convert to fraction form
    27,615.81/38,107.48 = 15,515.35/x
  3. Step 3: Cross multiply
    27,615.81x = 38,107.48 × 15,515.35
  4. Step 4: Simplify right side
    27,615.81x = 591,250,828.49
  5. Step 5: Solve for x
    x = 591,250,828.49/27,615.81
  6. Step 6: Final answer
    x = 21,409.87

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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.