Home / 21,790.18-30,071.91-12,359.35

Finding the Fourth Proportional to 21,790.18, 30,071.91 and 12,359.35

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Solution

The fourth proportional to 21,790.18, 30,071.91 and 12,359.35 is: 17,056.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.18 : 30,071.91 = 12,359.35 : x
  2. Step 2: Convert to fraction form
    21,790.18/30,071.91 = 12,359.35/x
  3. Step 3: Cross multiply
    21,790.18x = 30,071.91 × 12,359.35
  4. Step 4: Simplify right side
    21,790.18x = 371,669,260.86
  5. Step 5: Solve for x
    x = 371,669,260.86/21,790.18
  6. Step 6: Final answer
    x = 17,056.73

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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.