Home / 21,827,919.21-30,114,921.16-13,991,752.18

Finding the Fourth Proportional to 21,827,919.21, 30,114,921.16 and 13,991,752.18

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Solution

The fourth proportional to 21,827,919.21, 30,114,921.16 and 13,991,752.18 is: 19,303,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827,919.21 : 30,114,921.16 = 13,991,752.18 : x
  2. Step 2: Convert to fraction form
    21,827,919.21/30,114,921.16 = 13,991,752.18/x
  3. Step 3: Cross multiply
    21,827,919.21x = 30,114,921.16 × 13,991,752.18
  4. Step 4: Simplify right side
    21,827,919.21x = 421,360,513,790,958.12
  5. Step 5: Solve for x
    x = 421,360,513,790,958.12/21,827,919.21
  6. Step 6: Final answer
    x = 19,303,741.68

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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.