Home / 21,017,720.80-31,502,086.80-9,659,317.60

Finding the Fourth Proportional to 21,017,720.80, 31,502,086.80 and 9,659,317.60

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Solution

The fourth proportional to 21,017,720.80, 31,502,086.80 and 9,659,317.60 is: 14,477,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,017,720.80 : 31,502,086.80 = 9,659,317.60 : x
  2. Step 2: Convert to fraction form
    21,017,720.80/31,502,086.80 = 9,659,317.60/x
  3. Step 3: Cross multiply
    21,017,720.80x = 31,502,086.80 × 9,659,317.60
  4. Step 4: Simplify right side
    21,017,720.80x = 304,288,661,463,967.69
  5. Step 5: Solve for x
    x = 304,288,661,463,967.69/21,017,720.80
  6. Step 6: Final answer
    x = 14,477,719.27

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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.