Home / 13,066.24-19,579.20-7,790.80

Finding the Fourth Proportional to 13,066.24, 19,579.20 and 7,790.80

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Solution

The fourth proportional to 13,066.24, 19,579.20 and 7,790.80 is: 11,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.24 : 19,579.20 = 7,790.80 : x
  2. Step 2: Convert to fraction form
    13,066.24/19,579.20 = 7,790.80/x
  3. Step 3: Cross multiply
    13,066.24x = 19,579.20 × 7,790.80
  4. Step 4: Simplify right side
    13,066.24x = 152,537,631.36
  5. Step 5: Solve for x
    x = 152,537,631.36/13,066.24
  6. Step 6: Final answer
    x = 11,674.18

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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.