Home / 30,119.09-45,186.51-10,399.01

Finding the Fourth Proportional to 30,119.09, 45,186.51 and 10,399.01

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Solution

The fourth proportional to 30,119.09, 45,186.51 and 10,399.01 is: 15,601.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,119.09 : 45,186.51 = 10,399.01 : x
  2. Step 2: Convert to fraction form
    30,119.09/45,186.51 = 10,399.01/x
  3. Step 3: Cross multiply
    30,119.09x = 45,186.51 × 10,399.01
  4. Step 4: Simplify right side
    30,119.09x = 469,894,969.36
  5. Step 5: Solve for x
    x = 469,894,969.36/30,119.09
  6. Step 6: Final answer
    x = 15,601.23

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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.