Home / 19,005.24-28,512.72-7,920.48

Finding the Fourth Proportional to 19,005.24, 28,512.72 and 7,920.48

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Solution

The fourth proportional to 19,005.24, 28,512.72 and 7,920.48 is: 11,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.24 : 28,512.72 = 7,920.48 : x
  2. Step 2: Convert to fraction form
    19,005.24/28,512.72 = 7,920.48/x
  3. Step 3: Cross multiply
    19,005.24x = 28,512.72 × 7,920.48
  4. Step 4: Simplify right side
    19,005.24x = 225,834,428.51
  5. Step 5: Solve for x
    x = 225,834,428.51/19,005.24
  6. Step 6: Final answer
    x = 11,882.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.