Home / 13,729.51-18,950.12-9,020.17

Finding the Fourth Proportional to 13,729.51, 18,950.12 and 9,020.17

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Solution

The fourth proportional to 13,729.51, 18,950.12 and 9,020.17 is: 12,450.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.51 : 18,950.12 = 9,020.17 : x
  2. Step 2: Convert to fraction form
    13,729.51/18,950.12 = 9,020.17/x
  3. Step 3: Cross multiply
    13,729.51x = 18,950.12 × 9,020.17
  4. Step 4: Simplify right side
    13,729.51x = 170,933,303.92
  5. Step 5: Solve for x
    x = 170,933,303.92/13,729.51
  6. Step 6: Final answer
    x = 12,450.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.