Home / 19,880.88-27,435.72-10,928.08

Finding the Fourth Proportional to 19,880.88, 27,435.72 and 10,928.08

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Solution

The fourth proportional to 19,880.88, 27,435.72 and 10,928.08 is: 15,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.88 : 27,435.72 = 10,928.08 : x
  2. Step 2: Convert to fraction form
    19,880.88/27,435.72 = 10,928.08/x
  3. Step 3: Cross multiply
    19,880.88x = 27,435.72 × 10,928.08
  4. Step 4: Simplify right side
    19,880.88x = 299,819,743.02
  5. Step 5: Solve for x
    x = 299,819,743.02/19,880.88
  6. Step 6: Final answer
    x = 15,080.81

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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.