Home / 15,697.85-21,668.71-10,394.37

Finding the Fourth Proportional to 15,697.85, 21,668.71 and 10,394.37

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Solution

The fourth proportional to 15,697.85, 21,668.71 and 10,394.37 is: 14,347.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.85 : 21,668.71 = 10,394.37 : x
  2. Step 2: Convert to fraction form
    15,697.85/21,668.71 = 10,394.37/x
  3. Step 3: Cross multiply
    15,697.85x = 21,668.71 × 10,394.37
  4. Step 4: Simplify right side
    15,697.85x = 225,232,589.16
  5. Step 5: Solve for x
    x = 225,232,589.16/15,697.85
  6. Step 6: Final answer
    x = 14,347.99

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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.