Home / 20,688,563.20-31,022,055.60-7,724,040.16

Finding the Fourth Proportional to 20,688,563.20, 31,022,055.60 and 7,724,040.16

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Solution

The fourth proportional to 20,688,563.20, 31,022,055.60 and 7,724,040.16 is: 11,582,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688,563.20 : 31,022,055.60 = 7,724,040.16 : x
  2. Step 2: Convert to fraction form
    20,688,563.20/31,022,055.60 = 7,724,040.16/x
  3. Step 3: Cross multiply
    20,688,563.20x = 31,022,055.60 × 7,724,040.16
  4. Step 4: Simplify right side
    20,688,563.20x = 239,615,603,300,152.91
  5. Step 5: Solve for x
    x = 239,615,603,300,152.91/20,688,563.20
  6. Step 6: Final answer
    x = 11,582,032.11

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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.