Home / 19,316.79-28,986.07-10,431.99

Finding the Fourth Proportional to 19,316.79, 28,986.07 and 10,431.99

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Solution

The fourth proportional to 19,316.79, 28,986.07 and 10,431.99 is: 15,653.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.79 : 28,986.07 = 10,431.99 : x
  2. Step 2: Convert to fraction form
    19,316.79/28,986.07 = 10,431.99/x
  3. Step 3: Cross multiply
    19,316.79x = 28,986.07 × 10,431.99
  4. Step 4: Simplify right side
    19,316.79x = 302,382,341.85
  5. Step 5: Solve for x
    x = 302,382,341.85/19,316.79
  6. Step 6: Final answer
    x = 15,653.86

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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.