Home / 20,310,679.11-28,021,381.54-13,345,108.26

Finding the Fourth Proportional to 20,310,679.11, 28,021,381.54 and 13,345,108.26

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Solution

The fourth proportional to 20,310,679.11, 28,021,381.54 and 13,345,108.26 is: 18,411,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310,679.11 : 28,021,381.54 = 13,345,108.26 : x
  2. Step 2: Convert to fraction form
    20,310,679.11/28,021,381.54 = 13,345,108.26/x
  3. Step 3: Cross multiply
    20,310,679.11x = 28,021,381.54 × 13,345,108.26
  4. Step 4: Simplify right side
    20,310,679.11x = 373,948,370,107,622.56
  5. Step 5: Solve for x
    x = 373,948,370,107,622.56/20,310,679.11
  6. Step 6: Final answer
    x = 18,411,416.38

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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.