Home / 13,975.20-19,284.96-7,687.20

Finding the Fourth Proportional to 13,975.20, 19,284.96 and 7,687.20

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Solution

The fourth proportional to 13,975.20, 19,284.96 and 7,687.20 is: 10,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.20 : 19,284.96 = 7,687.20 : x
  2. Step 2: Convert to fraction form
    13,975.20/19,284.96 = 7,687.20/x
  3. Step 3: Cross multiply
    13,975.20x = 19,284.96 × 7,687.20
  4. Step 4: Simplify right side
    13,975.20x = 148,247,344.51
  5. Step 5: Solve for x
    x = 148,247,344.51/13,975.20
  6. Step 6: Final answer
    x = 10,607.89

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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.