Home / 13,852.06-20,780.81-5,087.05

Finding the Fourth Proportional to 13,852.06, 20,780.81 and 5,087.05

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Solution

The fourth proportional to 13,852.06, 20,780.81 and 5,087.05 is: 7,631.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,852.06 : 20,780.81 = 5,087.05 : x
  2. Step 2: Convert to fraction form
    13,852.06/20,780.81 = 5,087.05/x
  3. Step 3: Cross multiply
    13,852.06x = 20,780.81 × 5,087.05
  4. Step 4: Simplify right side
    13,852.06x = 105,713,019.51
  5. Step 5: Solve for x
    x = 105,713,019.51/13,852.06
  6. Step 6: Final answer
    x = 7,631.57

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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.