Home / 13,907.50-19,192.80-7,620.28

Finding the Fourth Proportional to 13,907.50, 19,192.80 and 7,620.28

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Solution

The fourth proportional to 13,907.50, 19,192.80 and 7,620.28 is: 10,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.50 : 19,192.80 = 7,620.28 : x
  2. Step 2: Convert to fraction form
    13,907.50/19,192.80 = 7,620.28/x
  3. Step 3: Cross multiply
    13,907.50x = 19,192.80 × 7,620.28
  4. Step 4: Simplify right side
    13,907.50x = 146,254,509.98
  5. Step 5: Solve for x
    x = 146,254,509.98/13,907.50
  6. Step 6: Final answer
    x = 10,516.23

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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.