Home / 13,772.03-19,007.13-7,805.63

Finding the Fourth Proportional to 13,772.03, 19,007.13 and 7,805.63

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Solution

The fourth proportional to 13,772.03, 19,007.13 and 7,805.63 is: 10,772.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772.03 : 19,007.13 = 7,805.63 : x
  2. Step 2: Convert to fraction form
    13,772.03/19,007.13 = 7,805.63/x
  3. Step 3: Cross multiply
    13,772.03x = 19,007.13 × 7,805.63
  4. Step 4: Simplify right side
    13,772.03x = 148,362,624.14
  5. Step 5: Solve for x
    x = 148,362,624.14/13,772.03
  6. Step 6: Final answer
    x = 10,772.75

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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.