Home / 43,816.40-65,688.60-18,875.60

Finding the Fourth Proportional to 43,816.40, 65,688.60 and 18,875.60

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Solution

The fourth proportional to 43,816.40, 65,688.60 and 18,875.60 is: 28,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,816.40 : 65,688.60 = 18,875.60 : x
  2. Step 2: Convert to fraction form
    43,816.40/65,688.60 = 18,875.60/x
  3. Step 3: Cross multiply
    43,816.40x = 65,688.60 × 18,875.60
  4. Step 4: Simplify right side
    43,816.40x = 1,239,911,738.16
  5. Step 5: Solve for x
    x = 1,239,911,738.16/43,816.40
  6. Step 6: Final answer
    x = 28,297.89

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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.