Home / 13,905.76-20,862-4,672.48

Finding the Fourth Proportional to 13,905.76, 20,862 and 4,672.48

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Solution

The fourth proportional to 13,905.76, 20,862 and 4,672.48 is: 7,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.76 : 20,862 = 4,672.48 : x
  2. Step 2: Convert to fraction form
    13,905.76/20,862 = 4,672.48/x
  3. Step 3: Cross multiply
    13,905.76x = 20,862 × 4,672.48
  4. Step 4: Simplify right side
    13,905.76x = 97,477,277.76
  5. Step 5: Solve for x
    x = 97,477,277.76/13,905.76
  6. Step 6: Final answer
    x = 7,009.85

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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.