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Finding the Fourth Proportional to 20,975,998.80, 29,426,118 and 20,975,998.80

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Solution

The fourth proportional to 20,975,998.80, 29,426,118 and 20,975,998.80 is: 29,426,118.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975,998.80 : 29,426,118 = 20,975,998.80 : x
  2. Step 2: Convert to fraction form
    20,975,998.80/29,426,118 = 20,975,998.80/x
  3. Step 3: Cross multiply
    20,975,998.80x = 29,426,118 × 20,975,998.80
  4. Step 4: Simplify right side
    20,975,998.80x = 617,242,215,856,658.38
  5. Step 5: Solve for x
    x = 617,242,215,856,658.38/20,975,998.80
  6. Step 6: Final answer
    x = 29,426,118.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.