Home / 20,613.23-30,896.36-12,275.63

Finding the Fourth Proportional to 20,613.23, 30,896.36 and 12,275.63

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Solution

The fourth proportional to 20,613.23, 30,896.36 and 12,275.63 is: 18,399.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.23 : 30,896.36 = 12,275.63 : x
  2. Step 2: Convert to fraction form
    20,613.23/30,896.36 = 12,275.63/x
  3. Step 3: Cross multiply
    20,613.23x = 30,896.36 × 12,275.63
  4. Step 4: Simplify right side
    20,613.23x = 379,272,283.71
  5. Step 5: Solve for x
    x = 379,272,283.71/20,613.23
  6. Step 6: Final answer
    x = 18,399.46

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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.