Home / 28,751,247,661.37-39,678,774,917.96-15,890,610,957.53

Finding the Fourth Proportional to 28,751,247,661.37, 39,678,774,917.96 and 15,890,610,957.53

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Solution

The fourth proportional to 28,751,247,661.37, 39,678,774,917.96 and 15,890,610,957.53 is: 21,930,177,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751,247,661.37 : 39,678,774,917.96 = 15,890,610,957.53 : x
  2. Step 2: Convert to fraction form
    28,751,247,661.37/39,678,774,917.96 = 15,890,610,957.53/x
  3. Step 3: Cross multiply
    28,751,247,661.37x = 39,678,774,917.96 × 15,890,610,957.53
  4. Step 4: Simplify right side
    28,751,247,661.37x = 630,519,975,492,535,058,432
  5. Step 5: Solve for x
    x = 630,519,975,492,535,058,432/28,751,247,661.37
  6. Step 6: Final answer
    x = 21,930,177,880.24

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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.