Home / 20,419.10-30,613.26-10,425.32

Finding the Fourth Proportional to 20,419.10, 30,613.26 and 10,425.32

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Solution

The fourth proportional to 20,419.10, 30,613.26 and 10,425.32 is: 15,630.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.10 : 30,613.26 = 10,425.32 : x
  2. Step 2: Convert to fraction form
    20,419.10/30,613.26 = 10,425.32/x
  3. Step 3: Cross multiply
    20,419.10x = 30,613.26 × 10,425.32
  4. Step 4: Simplify right side
    20,419.10x = 319,153,031.74
  5. Step 5: Solve for x
    x = 319,153,031.74/20,419.10
  6. Step 6: Final answer
    x = 15,630.12

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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.