Home / 18,318.40-25,303.12-13,548.04

Finding the Fourth Proportional to 18,318.40, 25,303.12 and 13,548.04

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Solution

The fourth proportional to 18,318.40, 25,303.12 and 13,548.04 is: 18,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.40 : 25,303.12 = 13,548.04 : x
  2. Step 2: Convert to fraction form
    18,318.40/25,303.12 = 13,548.04/x
  3. Step 3: Cross multiply
    18,318.40x = 25,303.12 × 13,548.04
  4. Step 4: Simplify right side
    18,318.40x = 342,807,584.76
  5. Step 5: Solve for x
    x = 342,807,584.76/18,318.40
  6. Step 6: Final answer
    x = 18,713.84

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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.