Home / 19,868.63-29,802.95-7,391.79

Finding the Fourth Proportional to 19,868.63, 29,802.95 and 7,391.79

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Solution

The fourth proportional to 19,868.63, 29,802.95 and 7,391.79 is: 11,087.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.63 : 29,802.95 = 7,391.79 : x
  2. Step 2: Convert to fraction form
    19,868.63/29,802.95 = 7,391.79/x
  3. Step 3: Cross multiply
    19,868.63x = 29,802.95 × 7,391.79
  4. Step 4: Simplify right side
    19,868.63x = 220,297,110.82
  5. Step 5: Solve for x
    x = 220,297,110.82/19,868.63
  6. Step 6: Final answer
    x = 11,087.69

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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.