Home / 12,421.40-18,625.70-4,626.20

Finding the Fourth Proportional to 12,421.40, 18,625.70 and 4,626.20

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Solution

The fourth proportional to 12,421.40, 18,625.70 and 4,626.20 is: 6,936.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.40 : 18,625.70 = 4,626.20 : x
  2. Step 2: Convert to fraction form
    12,421.40/18,625.70 = 4,626.20/x
  3. Step 3: Cross multiply
    12,421.40x = 18,625.70 × 4,626.20
  4. Step 4: Simplify right side
    12,421.40x = 86,166,213.34
  5. Step 5: Solve for x
    x = 86,166,213.34/12,421.40
  6. Step 6: Final answer
    x = 6,936.92

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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.