Home / 12,357.10-18,619.97-10,213.84

Finding the Fourth Proportional to 12,357.10, 18,619.97 and 10,213.84

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Solution

The fourth proportional to 12,357.10, 18,619.97 and 10,213.84 is: 15,390.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.10 : 18,619.97 = 10,213.84 : x
  2. Step 2: Convert to fraction form
    12,357.10/18,619.97 = 10,213.84/x
  3. Step 3: Cross multiply
    12,357.10x = 18,619.97 × 10,213.84
  4. Step 4: Simplify right side
    12,357.10x = 190,181,250.22
  5. Step 5: Solve for x
    x = 190,181,250.22/12,357.10
  6. Step 6: Final answer
    x = 15,390.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.