Home / 15,119.48-20,858.16-10,078.80

Finding the Fourth Proportional to 15,119.48, 20,858.16 and 10,078.80

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Solution

The fourth proportional to 15,119.48, 20,858.16 and 10,078.80 is: 13,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.48 : 20,858.16 = 10,078.80 : x
  2. Step 2: Convert to fraction form
    15,119.48/20,858.16 = 10,078.80/x
  3. Step 3: Cross multiply
    15,119.48x = 20,858.16 × 10,078.80
  4. Step 4: Simplify right side
    15,119.48x = 210,225,223.01
  5. Step 5: Solve for x
    x = 210,225,223.01/15,119.48
  6. Step 6: Final answer
    x = 13,904.26

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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.