Home / 20,672,386.68-28,527,894-11,507,194.56

Finding the Fourth Proportional to 20,672,386.68, 28,527,894 and 11,507,194.56

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Solution

The fourth proportional to 20,672,386.68, 28,527,894 and 11,507,194.56 is: 15,879,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,386.68 : 28,527,894 = 11,507,194.56 : x
  2. Step 2: Convert to fraction form
    20,672,386.68/28,527,894 = 11,507,194.56/x
  3. Step 3: Cross multiply
    20,672,386.68x = 28,527,894 × 11,507,194.56
  4. Step 4: Simplify right side
    20,672,386.68x = 328,276,026,645,056.62
  5. Step 5: Solve for x
    x = 328,276,026,645,056.62/20,672,386.68
  6. Step 6: Final answer
    x = 15,879,928.71

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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.