Home / 15,816.24-23,704.92-8,420.40

Finding the Fourth Proportional to 15,816.24, 23,704.92 and 8,420.40

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Solution

The fourth proportional to 15,816.24, 23,704.92 and 8,420.40 is: 12,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.24 : 23,704.92 = 8,420.40 : x
  2. Step 2: Convert to fraction form
    15,816.24/23,704.92 = 8,420.40/x
  3. Step 3: Cross multiply
    15,816.24x = 23,704.92 × 8,420.40
  4. Step 4: Simplify right side
    15,816.24x = 199,604,908.37
  5. Step 5: Solve for x
    x = 199,604,908.37/15,816.24
  6. Step 6: Final answer
    x = 12,620.25

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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.