Home / 30,159.81-45,243.23-11,453.85

Finding the Fourth Proportional to 30,159.81, 45,243.23 and 11,453.85

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Solution

The fourth proportional to 30,159.81, 45,243.23 and 11,453.85 is: 17,182.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,159.81 : 45,243.23 = 11,453.85 : x
  2. Step 2: Convert to fraction form
    30,159.81/45,243.23 = 11,453.85/x
  3. Step 3: Cross multiply
    30,159.81x = 45,243.23 × 11,453.85
  4. Step 4: Simplify right side
    30,159.81x = 518,209,112.67
  5. Step 5: Solve for x
    x = 518,209,112.67/30,159.81
  6. Step 6: Final answer
    x = 17,182.11

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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.