Home / 13,997.51-19,316.57-7,709.88

Finding the Fourth Proportional to 13,997.51, 19,316.57 and 7,709.88

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Solution

The fourth proportional to 13,997.51, 19,316.57 and 7,709.88 is: 10,639.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.51 : 19,316.57 = 7,709.88 : x
  2. Step 2: Convert to fraction form
    13,997.51/19,316.57 = 7,709.88/x
  3. Step 3: Cross multiply
    13,997.51x = 19,316.57 × 7,709.88
  4. Step 4: Simplify right side
    13,997.51x = 148,928,470.60
  5. Step 5: Solve for x
    x = 148,928,470.60/13,997.51
  6. Step 6: Final answer
    x = 10,639.64

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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.