Home / 20,378.21-30,567.42-9,277.13

Finding the Fourth Proportional to 20,378.21, 30,567.42 and 9,277.13

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Solution

The fourth proportional to 20,378.21, 30,567.42 and 9,277.13 is: 13,915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.21 : 30,567.42 = 9,277.13 : x
  2. Step 2: Convert to fraction form
    20,378.21/30,567.42 = 9,277.13/x
  3. Step 3: Cross multiply
    20,378.21x = 30,567.42 × 9,277.13
  4. Step 4: Simplify right side
    20,378.21x = 283,578,007.23
  5. Step 5: Solve for x
    x = 283,578,007.23/20,378.21
  6. Step 6: Final answer
    x = 13,915.75

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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.