Home / 10,858.40-14,986.80-10,119.68

Finding the Fourth Proportional to 10,858.40, 14,986.80 and 10,119.68

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Solution

The fourth proportional to 10,858.40, 14,986.80 and 10,119.68 is: 13,967.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.40 : 14,986.80 = 10,119.68 : x
  2. Step 2: Convert to fraction form
    10,858.40/14,986.80 = 10,119.68/x
  3. Step 3: Cross multiply
    10,858.40x = 14,986.80 × 10,119.68
  4. Step 4: Simplify right side
    10,858.40x = 151,661,620.22
  5. Step 5: Solve for x
    x = 151,661,620.22/10,858.40
  6. Step 6: Final answer
    x = 13,967.22

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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.