Home / 18,420.16-25,419.84-10,036.80

Finding the Fourth Proportional to 18,420.16, 25,419.84 and 10,036.80

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Solution

The fourth proportional to 18,420.16, 25,419.84 and 10,036.80 is: 13,850.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.16 : 25,419.84 = 10,036.80 : x
  2. Step 2: Convert to fraction form
    18,420.16/25,419.84 = 10,036.80/x
  3. Step 3: Cross multiply
    18,420.16x = 25,419.84 × 10,036.80
  4. Step 4: Simplify right side
    18,420.16x = 255,133,850.11
  5. Step 5: Solve for x
    x = 255,133,850.11/18,420.16
  6. Step 6: Final answer
    x = 13,850.79

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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.