Home / 39,715.20-59,475.60-18,914.40

Finding the Fourth Proportional to 39,715.20, 59,475.60 and 18,914.40

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Solution

The fourth proportional to 39,715.20, 59,475.60 and 18,914.40 is: 28,325.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715.20 : 59,475.60 = 18,914.40 : x
  2. Step 2: Convert to fraction form
    39,715.20/59,475.60 = 18,914.40/x
  3. Step 3: Cross multiply
    39,715.20x = 59,475.60 × 18,914.40
  4. Step 4: Simplify right side
    39,715.20x = 1,124,945,288.64
  5. Step 5: Solve for x
    x = 1,124,945,288.64/39,715.20
  6. Step 6: Final answer
    x = 28,325.31

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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.