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Finding the Fourth Proportional to 15,210.40, 20,977.23 and 14,324.68

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Solution

The fourth proportional to 15,210.40, 20,977.23 and 14,324.68 is: 19,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.40 : 20,977.23 = 14,324.68 : x
  2. Step 2: Convert to fraction form
    15,210.40/20,977.23 = 14,324.68/x
  3. Step 3: Cross multiply
    15,210.40x = 20,977.23 × 14,324.68
  4. Step 4: Simplify right side
    15,210.40x = 300,492,107.04
  5. Step 5: Solve for x
    x = 300,492,107.04/15,210.40
  6. Step 6: Final answer
    x = 19,755.70

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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.