Home / 13,212.80-19,826.38-7,670.13

Finding the Fourth Proportional to 13,212.80, 19,826.38 and 7,670.13

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Solution

The fourth proportional to 13,212.80, 19,826.38 and 7,670.13 is: 11,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.80 : 19,826.38 = 7,670.13 : x
  2. Step 2: Convert to fraction form
    13,212.80/19,826.38 = 7,670.13/x
  3. Step 3: Cross multiply
    13,212.80x = 19,826.38 × 7,670.13
  4. Step 4: Simplify right side
    13,212.80x = 152,070,847.27
  5. Step 5: Solve for x
    x = 152,070,847.27/13,212.80
  6. Step 6: Final answer
    x = 11,509.35

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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.