Home / 14,719.36-20,312.70-8,431.76

Finding the Fourth Proportional to 14,719.36, 20,312.70 and 8,431.76

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Solution

The fourth proportional to 14,719.36, 20,312.70 and 8,431.76 is: 11,635.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,719.36 : 20,312.70 = 8,431.76 : x
  2. Step 2: Convert to fraction form
    14,719.36/20,312.70 = 8,431.76/x
  3. Step 3: Cross multiply
    14,719.36x = 20,312.70 × 8,431.76
  4. Step 4: Simplify right side
    14,719.36x = 171,271,811.35
  5. Step 5: Solve for x
    x = 171,271,811.35/14,719.36
  6. Step 6: Final answer
    x = 11,635.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.