Home / 38,688.40-58,043.40-18,967.60

Finding the Fourth Proportional to 38,688.40, 58,043.40 and 18,967.60

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Solution

The fourth proportional to 38,688.40, 58,043.40 and 18,967.60 is: 28,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688.40 : 58,043.40 = 18,967.60 : x
  2. Step 2: Convert to fraction form
    38,688.40/58,043.40 = 18,967.60/x
  3. Step 3: Cross multiply
    38,688.40x = 58,043.40 × 18,967.60
  4. Step 4: Simplify right side
    38,688.40x = 1,100,943,993.84
  5. Step 5: Solve for x
    x = 1,100,943,993.84/38,688.40
  6. Step 6: Final answer
    x = 28,456.69

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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.