Home / 12,918.74-19,336.19-8,480.34

Finding the Fourth Proportional to 12,918.74, 19,336.19 and 8,480.34

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Solution

The fourth proportional to 12,918.74, 19,336.19 and 8,480.34 is: 12,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.74 : 19,336.19 = 8,480.34 : x
  2. Step 2: Convert to fraction form
    12,918.74/19,336.19 = 8,480.34/x
  3. Step 3: Cross multiply
    12,918.74x = 19,336.19 × 8,480.34
  4. Step 4: Simplify right side
    12,918.74x = 163,977,423.10
  5. Step 5: Solve for x
    x = 163,977,423.10/12,918.74
  6. Step 6: Final answer
    x = 12,692.99

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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.