Home / 27,918.56-38,528.40-15,344.12

Finding the Fourth Proportional to 27,918.56, 38,528.40 and 15,344.12

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Solution

The fourth proportional to 27,918.56, 38,528.40 and 15,344.12 is: 21,175.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.56 : 38,528.40 = 15,344.12 : x
  2. Step 2: Convert to fraction form
    27,918.56/38,528.40 = 15,344.12/x
  3. Step 3: Cross multiply
    27,918.56x = 38,528.40 × 15,344.12
  4. Step 4: Simplify right side
    27,918.56x = 591,184,393.01
  5. Step 5: Solve for x
    x = 591,184,393.01/27,918.56
  6. Step 6: Final answer
    x = 21,175.32

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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.