Home / 13,864.04-19,131.20-7,814.76

Finding the Fourth Proportional to 13,864.04, 19,131.20 and 7,814.76

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Solution

The fourth proportional to 13,864.04, 19,131.20 and 7,814.76 is: 10,783.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.04 : 19,131.20 = 7,814.76 : x
  2. Step 2: Convert to fraction form
    13,864.04/19,131.20 = 7,814.76/x
  3. Step 3: Cross multiply
    13,864.04x = 19,131.20 × 7,814.76
  4. Step 4: Simplify right side
    13,864.04x = 149,505,736.51
  5. Step 5: Solve for x
    x = 149,505,736.51/13,864.04
  6. Step 6: Final answer
    x = 10,783.71

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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.