Home / 21,987,778.57-30,330,527.79-13,713,475.71

Finding the Fourth Proportional to 21,987,778.57, 30,330,527.79 and 13,713,475.71

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Solution

The fourth proportional to 21,987,778.57, 30,330,527.79 and 13,713,475.71 is: 18,916,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987,778.57 : 30,330,527.79 = 13,713,475.71 : x
  2. Step 2: Convert to fraction form
    21,987,778.57/30,330,527.79 = 13,713,475.71/x
  3. Step 3: Cross multiply
    21,987,778.57x = 30,330,527.79 × 13,713,475.71
  4. Step 4: Simplify right side
    21,987,778.57x = 415,936,956,119,645
  5. Step 5: Solve for x
    x = 415,936,956,119,645/21,987,778.57
  6. Step 6: Final answer
    x = 18,916,733.89

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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.