Home / 30,785,576.04-42,481,201.68-20,842,232.22

Finding the Fourth Proportional to 30,785,576.04, 42,481,201.68 and 20,842,232.22

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Solution

The fourth proportional to 30,785,576.04, 42,481,201.68 and 20,842,232.22 is: 28,760,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785,576.04 : 42,481,201.68 = 20,842,232.22 : x
  2. Step 2: Convert to fraction form
    30,785,576.04/42,481,201.68 = 20,842,232.22/x
  3. Step 3: Cross multiply
    30,785,576.04x = 42,481,201.68 × 20,842,232.22
  4. Step 4: Simplify right side
    30,785,576.04x = 885,403,070,399,214.12
  5. Step 5: Solve for x
    x = 885,403,070,399,214.12/30,785,576.04
  6. Step 6: Final answer
    x = 28,760,321.69

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.