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Finding the Fourth Proportional to 12,900.26, 19,359.02 and 4,692.26

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Solution

The fourth proportional to 12,900.26, 19,359.02 and 4,692.26 is: 7,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.26 : 19,359.02 = 4,692.26 : x
  2. Step 2: Convert to fraction form
    12,900.26/19,359.02 = 4,692.26/x
  3. Step 3: Cross multiply
    12,900.26x = 19,359.02 × 4,692.26
  4. Step 4: Simplify right side
    12,900.26x = 90,837,555.19
  5. Step 5: Solve for x
    x = 90,837,555.19/12,900.26
  6. Step 6: Final answer
    x = 7,041.53

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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.