Home / 28,941,470.72-39,939,697.60-15,889,932.80

Finding the Fourth Proportional to 28,941,470.72, 39,939,697.60 and 15,889,932.80

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Solution

The fourth proportional to 28,941,470.72, 39,939,697.60 and 15,889,932.80 is: 21,928,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,941,470.72 : 39,939,697.60 = 15,889,932.80 : x
  2. Step 2: Convert to fraction form
    28,941,470.72/39,939,697.60 = 15,889,932.80/x
  3. Step 3: Cross multiply
    28,941,470.72x = 39,939,697.60 × 15,889,932.80
  4. Step 4: Simplify right side
    28,941,470.72x = 634,639,110,916,321.38
  5. Step 5: Solve for x
    x = 634,639,110,916,321.38/28,941,470.72
  6. Step 6: Final answer
    x = 21,928,364.22

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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.