Home / 28,709.80-43,004.22-13,140.52

Finding the Fourth Proportional to 28,709.80, 43,004.22 and 13,140.52

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Solution

The fourth proportional to 28,709.80, 43,004.22 and 13,140.52 is: 19,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.80 : 43,004.22 = 13,140.52 : x
  2. Step 2: Convert to fraction form
    28,709.80/43,004.22 = 13,140.52/x
  3. Step 3: Cross multiply
    28,709.80x = 43,004.22 × 13,140.52
  4. Step 4: Simplify right side
    28,709.80x = 565,097,812.99
  5. Step 5: Solve for x
    x = 565,097,812.99/28,709.80
  6. Step 6: Final answer
    x = 19,683.10

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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.