Home / 12,416.40-18,622.80-3,650.40

Finding the Fourth Proportional to 12,416.40, 18,622.80 and 3,650.40

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Solution

The fourth proportional to 12,416.40, 18,622.80 and 3,650.40 is: 5,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.40 : 18,622.80 = 3,650.40 : x
  2. Step 2: Convert to fraction form
    12,416.40/18,622.80 = 3,650.40/x
  3. Step 3: Cross multiply
    12,416.40x = 18,622.80 × 3,650.40
  4. Step 4: Simplify right side
    12,416.40x = 67,980,669.12
  5. Step 5: Solve for x
    x = 67,980,669.12/12,416.40
  6. Step 6: Final answer
    x = 5,475.07

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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.