Home / 28,680,849.92-39,579,059.76-15,628,221.92

Finding the Fourth Proportional to 28,680,849.92, 39,579,059.76 and 15,628,221.92

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Solution

The fourth proportional to 28,680,849.92, 39,579,059.76 and 15,628,221.92 is: 21,566,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680,849.92 : 39,579,059.76 = 15,628,221.92 : x
  2. Step 2: Convert to fraction form
    28,680,849.92/39,579,059.76 = 15,628,221.92/x
  3. Step 3: Cross multiply
    28,680,849.92x = 39,579,059.76 × 15,628,221.92
  4. Step 4: Simplify right side
    28,680,849.92x = 618,550,329,314,221.88
  5. Step 5: Solve for x
    x = 618,550,329,314,221.88/28,680,849.92
  6. Step 6: Final answer
    x = 21,566,666.64

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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.