Home / 20,445.21-30,668.09-7,298.37

Finding the Fourth Proportional to 20,445.21, 30,668.09 and 7,298.37

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Solution

The fourth proportional to 20,445.21, 30,668.09 and 7,298.37 is: 10,947.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.21 : 30,668.09 = 7,298.37 : x
  2. Step 2: Convert to fraction form
    20,445.21/30,668.09 = 7,298.37/x
  3. Step 3: Cross multiply
    20,445.21x = 30,668.09 × 7,298.37
  4. Step 4: Simplify right side
    20,445.21x = 223,827,031.52
  5. Step 5: Solve for x
    x = 223,827,031.52/20,445.21
  6. Step 6: Final answer
    x = 10,947.65

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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.