Home / 13,928.07-19,221.78-7,959.63

Finding the Fourth Proportional to 13,928.07, 19,221.78 and 7,959.63

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Solution

The fourth proportional to 13,928.07, 19,221.78 and 7,959.63 is: 10,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.07 : 19,221.78 = 7,959.63 : x
  2. Step 2: Convert to fraction form
    13,928.07/19,221.78 = 7,959.63/x
  3. Step 3: Cross multiply
    13,928.07x = 19,221.78 × 7,959.63
  4. Step 4: Simplify right side
    13,928.07x = 152,998,256.74
  5. Step 5: Solve for x
    x = 152,998,256.74/13,928.07
  6. Step 6: Final answer
    x = 10,984.89

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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.