Home / 20,091,945.29-30,128,168.68-11,785,018.07

Finding the Fourth Proportional to 20,091,945.29, 30,128,168.68 and 11,785,018.07

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Solution

The fourth proportional to 20,091,945.29, 30,128,168.68 and 11,785,018.07 is: 17,671,808.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091,945.29 : 30,128,168.68 = 11,785,018.07 : x
  2. Step 2: Convert to fraction form
    20,091,945.29/30,128,168.68 = 11,785,018.07/x
  3. Step 3: Cross multiply
    20,091,945.29x = 30,128,168.68 × 11,785,018.07
  4. Step 4: Simplify right side
    20,091,945.29x = 355,061,012,355,665.88
  5. Step 5: Solve for x
    x = 355,061,012,355,665.88/20,091,945.29
  6. Step 6: Final answer
    x = 17,671,808.64

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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.