Home / 20,391,837.80-30,587,756.70-18,159,785.60

Finding the Fourth Proportional to 20,391,837.80, 30,587,756.70 and 18,159,785.60

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Solution

The fourth proportional to 20,391,837.80, 30,587,756.70 and 18,159,785.60 is: 27,239,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,837.80 : 30,587,756.70 = 18,159,785.60 : x
  2. Step 2: Convert to fraction form
    20,391,837.80/30,587,756.70 = 18,159,785.60/x
  3. Step 3: Cross multiply
    20,391,837.80x = 30,587,756.70 × 18,159,785.60
  4. Step 4: Simplify right side
    20,391,837.80x = 555,467,103,656,963.56
  5. Step 5: Solve for x
    x = 555,467,103,656,963.56/20,391,837.80
  6. Step 6: Final answer
    x = 27,239,678.40

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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.