Home / 12,835.18-19,242.61-8,420.36

Finding the Fourth Proportional to 12,835.18, 19,242.61 and 8,420.36

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Solution

The fourth proportional to 12,835.18, 19,242.61 and 8,420.36 is: 12,623.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,835.18 : 19,242.61 = 8,420.36 : x
  2. Step 2: Convert to fraction form
    12,835.18/19,242.61 = 8,420.36/x
  3. Step 3: Cross multiply
    12,835.18x = 19,242.61 × 8,420.36
  4. Step 4: Simplify right side
    12,835.18x = 162,029,633.64
  5. Step 5: Solve for x
    x = 162,029,633.64/12,835.18
  6. Step 6: Final answer
    x = 12,623.87

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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.