Home / 13,985.77-20,973.62-4,749.61

Finding the Fourth Proportional to 13,985.77, 20,973.62 and 4,749.61

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Solution

The fourth proportional to 13,985.77, 20,973.62 and 4,749.61 is: 7,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.77 : 20,973.62 = 4,749.61 : x
  2. Step 2: Convert to fraction form
    13,985.77/20,973.62 = 4,749.61/x
  3. Step 3: Cross multiply
    13,985.77x = 20,973.62 × 4,749.61
  4. Step 4: Simplify right side
    13,985.77x = 99,616,491.54
  5. Step 5: Solve for x
    x = 99,616,491.54/13,985.77
  6. Step 6: Final answer
    x = 7,122.70

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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.