Home / 34,215.20-51,322.80-15,783.20

Finding the Fourth Proportional to 34,215.20, 51,322.80 and 15,783.20

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Solution

The fourth proportional to 34,215.20, 51,322.80 and 15,783.20 is: 23,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,215.20 : 51,322.80 = 15,783.20 : x
  2. Step 2: Convert to fraction form
    34,215.20/51,322.80 = 15,783.20/x
  3. Step 3: Cross multiply
    34,215.20x = 51,322.80 × 15,783.20
  4. Step 4: Simplify right side
    34,215.20x = 810,038,016.96
  5. Step 5: Solve for x
    x = 810,038,016.96/34,215.20
  6. Step 6: Final answer
    x = 23,674.80

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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.