Home / 13,509.47-20,253.26-5,187.93

Finding the Fourth Proportional to 13,509.47, 20,253.26 and 5,187.93

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Solution

The fourth proportional to 13,509.47, 20,253.26 and 5,187.93 is: 7,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.47 : 20,253.26 = 5,187.93 : x
  2. Step 2: Convert to fraction form
    13,509.47/20,253.26 = 5,187.93/x
  3. Step 3: Cross multiply
    13,509.47x = 20,253.26 × 5,187.93
  4. Step 4: Simplify right side
    13,509.47x = 105,072,495.15
  5. Step 5: Solve for x
    x = 105,072,495.15/13,509.47
  6. Step 6: Final answer
    x = 7,777.69

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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.