Home / 13,128.30-19,692.45-6,108.30

Finding the Fourth Proportional to 13,128.30, 19,692.45 and 6,108.30

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Solution

The fourth proportional to 13,128.30, 19,692.45 and 6,108.30 is: 9,162.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.30 : 19,692.45 = 6,108.30 : x
  2. Step 2: Convert to fraction form
    13,128.30/19,692.45 = 6,108.30/x
  3. Step 3: Cross multiply
    13,128.30x = 19,692.45 × 6,108.30
  4. Step 4: Simplify right side
    13,128.30x = 120,287,392.34
  5. Step 5: Solve for x
    x = 120,287,392.34/13,128.30
  6. Step 6: Final answer
    x = 9,162.45

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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.