Home / 21,903,031.08-30,229,975.71-13,201,213.68

Finding the Fourth Proportional to 21,903,031.08, 30,229,975.71 and 13,201,213.68

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Solution

The fourth proportional to 21,903,031.08, 30,229,975.71 and 13,201,213.68 is: 18,219,960.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903,031.08 : 30,229,975.71 = 13,201,213.68 : x
  2. Step 2: Convert to fraction form
    21,903,031.08/30,229,975.71 = 13,201,213.68/x
  3. Step 3: Cross multiply
    21,903,031.08x = 30,229,975.71 × 13,201,213.68
  4. Step 4: Simplify right side
    21,903,031.08x = 399,072,368,888,919.69
  5. Step 5: Solve for x
    x = 399,072,368,888,919.69/21,903,031.08
  6. Step 6: Final answer
    x = 18,219,960.86

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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.