Home / 13,148.25-18,146.93-7,770.46

Finding the Fourth Proportional to 13,148.25, 18,146.93 and 7,770.46

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Solution

The fourth proportional to 13,148.25, 18,146.93 and 7,770.46 is: 10,724.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.25 : 18,146.93 = 7,770.46 : x
  2. Step 2: Convert to fraction form
    13,148.25/18,146.93 = 7,770.46/x
  3. Step 3: Cross multiply
    13,148.25x = 18,146.93 × 7,770.46
  4. Step 4: Simplify right side
    13,148.25x = 141,009,993.69
  5. Step 5: Solve for x
    x = 141,009,993.69/13,148.25
  6. Step 6: Final answer
    x = 10,724.62

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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.