Home / 13,670.07-20,470.24-10,900.78

Finding the Fourth Proportional to 13,670.07, 20,470.24 and 10,900.78

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Solution

The fourth proportional to 13,670.07, 20,470.24 and 10,900.78 is: 16,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.07 : 20,470.24 = 10,900.78 : x
  2. Step 2: Convert to fraction form
    13,670.07/20,470.24 = 10,900.78/x
  3. Step 3: Cross multiply
    13,670.07x = 20,470.24 × 10,900.78
  4. Step 4: Simplify right side
    13,670.07x = 223,141,529.95
  5. Step 5: Solve for x
    x = 223,141,529.95/13,670.07
  6. Step 6: Final answer
    x = 16,323.37

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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.