Home / 43,154.48-64,735.23-11,989.73

Finding the Fourth Proportional to 43,154.48, 64,735.23 and 11,989.73

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Solution

The fourth proportional to 43,154.48, 64,735.23 and 11,989.73 is: 17,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,154.48 : 64,735.23 = 11,989.73 : x
  2. Step 2: Convert to fraction form
    43,154.48/64,735.23 = 11,989.73/x
  3. Step 3: Cross multiply
    43,154.48x = 64,735.23 × 11,989.73
  4. Step 4: Simplify right side
    43,154.48x = 776,157,929.19
  5. Step 5: Solve for x
    x = 776,157,929.19/43,154.48
  6. Step 6: Final answer
    x = 17,985.57

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1.5x scale

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.