Home / 12,219.16-18,328.74-4,425.40

Finding the Fourth Proportional to 12,219.16, 18,328.74 and 4,425.40

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Solution

The fourth proportional to 12,219.16, 18,328.74 and 4,425.40 is: 6,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.16 : 18,328.74 = 4,425.40 : x
  2. Step 2: Convert to fraction form
    12,219.16/18,328.74 = 4,425.40/x
  3. Step 3: Cross multiply
    12,219.16x = 18,328.74 × 4,425.40
  4. Step 4: Simplify right side
    12,219.16x = 81,112,006.00
  5. Step 5: Solve for x
    x = 81,112,006.00/12,219.16
  6. Step 6: Final answer
    x = 6,638.10

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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.