Home / 30,215.11-45,315.80-11,488.49

Finding the Fourth Proportional to 30,215.11, 45,315.80 and 11,488.49

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Solution

The fourth proportional to 30,215.11, 45,315.80 and 11,488.49 is: 17,230.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.11 : 45,315.80 = 11,488.49 : x
  2. Step 2: Convert to fraction form
    30,215.11/45,315.80 = 11,488.49/x
  3. Step 3: Cross multiply
    30,215.11x = 45,315.80 × 11,488.49
  4. Step 4: Simplify right side
    30,215.11x = 520,609,888.56
  5. Step 5: Solve for x
    x = 520,609,888.56/30,215.11
  6. Step 6: Final answer
    x = 17,230.12

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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.