Home / 21,028-31,541.92-14,434.16

Finding the Fourth Proportional to 21,028, 31,541.92 and 14,434.16

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Solution

The fourth proportional to 21,028, 31,541.92 and 14,434.16 is: 21,651.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028 : 31,541.92 = 14,434.16 : x
  2. Step 2: Convert to fraction form
    21,028/31,541.92 = 14,434.16/x
  3. Step 3: Cross multiply
    21,028x = 31,541.92 × 14,434.16
  4. Step 4: Simplify right side
    21,028x = 455,281,119.99
  5. Step 5: Solve for x
    x = 455,281,119.99/21,028
  6. Step 6: Final answer
    x = 21,651.19

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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.