Home / 18,453.12-25,442.88-13,975.68

Finding the Fourth Proportional to 18,453.12, 25,442.88 and 13,975.68

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Solution

The fourth proportional to 18,453.12, 25,442.88 and 13,975.68 is: 19,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.12 : 25,442.88 = 13,975.68 : x
  2. Step 2: Convert to fraction form
    18,453.12/25,442.88 = 13,975.68/x
  3. Step 3: Cross multiply
    18,453.12x = 25,442.88 × 13,975.68
  4. Step 4: Simplify right side
    18,453.12x = 355,581,549.16
  5. Step 5: Solve for x
    x = 355,581,549.16/18,453.12
  6. Step 6: Final answer
    x = 19,269.45

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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.