Home / 12,964.20-19,430.30-8,804.20

Finding the Fourth Proportional to 12,964.20, 19,430.30 and 8,804.20

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Solution

The fourth proportional to 12,964.20, 19,430.30 and 8,804.20 is: 13,195.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.20 : 19,430.30 = 8,804.20 : x
  2. Step 2: Convert to fraction form
    12,964.20/19,430.30 = 8,804.20/x
  3. Step 3: Cross multiply
    12,964.20x = 19,430.30 × 8,804.20
  4. Step 4: Simplify right side
    12,964.20x = 171,068,247.26
  5. Step 5: Solve for x
    x = 171,068,247.26/12,964.20
  6. Step 6: Final answer
    x = 13,195.43

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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.