Home / 13,902.75-19,185.80-7,615.35

Finding the Fourth Proportional to 13,902.75, 19,185.80 and 7,615.35

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Solution

The fourth proportional to 13,902.75, 19,185.80 and 7,615.35 is: 10,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.75 : 19,185.80 = 7,615.35 : x
  2. Step 2: Convert to fraction form
    13,902.75/19,185.80 = 7,615.35/x
  3. Step 3: Cross multiply
    13,902.75x = 19,185.80 × 7,615.35
  4. Step 4: Simplify right side
    13,902.75x = 146,106,582.03
  5. Step 5: Solve for x
    x = 146,106,582.03/13,902.75
  6. Step 6: Final answer
    x = 10,509.19

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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.