Home / 13,991.68-19,308.54-7,704.07

Finding the Fourth Proportional to 13,991.68, 19,308.54 and 7,704.07

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Solution

The fourth proportional to 13,991.68, 19,308.54 and 7,704.07 is: 10,631.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.68 : 19,308.54 = 7,704.07 : x
  2. Step 2: Convert to fraction form
    13,991.68/19,308.54 = 7,704.07/x
  3. Step 3: Cross multiply
    13,991.68x = 19,308.54 × 7,704.07
  4. Step 4: Simplify right side
    13,991.68x = 148,754,343.76
  5. Step 5: Solve for x
    x = 148,754,343.76/13,991.68
  6. Step 6: Final answer
    x = 10,631.63

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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.