Home / 20,472.08-30,714.36-10,618.40

Finding the Fourth Proportional to 20,472.08, 30,714.36 and 10,618.40

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Solution

The fourth proportional to 20,472.08, 30,714.36 and 10,618.40 is: 15,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.08 : 30,714.36 = 10,618.40 : x
  2. Step 2: Convert to fraction form
    20,472.08/30,714.36 = 10,618.40/x
  3. Step 3: Cross multiply
    20,472.08x = 30,714.36 × 10,618.40
  4. Step 4: Simplify right side
    20,472.08x = 326,137,360.22
  5. Step 5: Solve for x
    x = 326,137,360.22/20,472.08
  6. Step 6: Final answer
    x = 15,930.84

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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.