Home / 18,898,455.20-28,347,682.80-13,125,552.80

Finding the Fourth Proportional to 18,898,455.20, 28,347,682.80 and 13,125,552.80

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Solution

The fourth proportional to 18,898,455.20, 28,347,682.80 and 13,125,552.80 is: 19,688,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898,455.20 : 28,347,682.80 = 13,125,552.80 : x
  2. Step 2: Convert to fraction form
    18,898,455.20/28,347,682.80 = 13,125,552.80/x
  3. Step 3: Cross multiply
    18,898,455.20x = 28,347,682.80 × 13,125,552.80
  4. Step 4: Simplify right side
    18,898,455.20x = 372,079,007,349,051.88
  5. Step 5: Solve for x
    x = 372,079,007,349,051.88/18,898,455.20
  6. Step 6: Final answer
    x = 19,688,329.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.