Home / 19,900.68-29,857.26-8,219.40

Finding the Fourth Proportional to 19,900.68, 29,857.26 and 8,219.40

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Solution

The fourth proportional to 19,900.68, 29,857.26 and 8,219.40 is: 12,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.68 : 29,857.26 = 8,219.40 : x
  2. Step 2: Convert to fraction form
    19,900.68/29,857.26 = 8,219.40/x
  3. Step 3: Cross multiply
    19,900.68x = 29,857.26 × 8,219.40
  4. Step 4: Simplify right side
    19,900.68x = 245,408,762.84
  5. Step 5: Solve for x
    x = 245,408,762.84/19,900.68
  6. Step 6: Final answer
    x = 12,331.68

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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.