Home / 13,907.79-19,192.80-7,620.16

Finding the Fourth Proportional to 13,907.79, 19,192.80 and 7,620.16

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Solution

The fourth proportional to 13,907.79, 19,192.80 and 7,620.16 is: 10,515.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.79 : 19,192.80 = 7,620.16 : x
  2. Step 2: Convert to fraction form
    13,907.79/19,192.80 = 7,620.16/x
  3. Step 3: Cross multiply
    13,907.79x = 19,192.80 × 7,620.16
  4. Step 4: Simplify right side
    13,907.79x = 146,252,206.85
  5. Step 5: Solve for x
    x = 146,252,206.85/13,907.79
  6. Step 6: Final answer
    x = 10,515.85

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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.