Home / 21,609.10-29,800.73-14,812.99

Finding the Fourth Proportional to 21,609.10, 29,800.73 and 14,812.99

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Solution

The fourth proportional to 21,609.10, 29,800.73 and 14,812.99 is: 20,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.10 : 29,800.73 = 14,812.99 : x
  2. Step 2: Convert to fraction form
    21,609.10/29,800.73 = 14,812.99/x
  3. Step 3: Cross multiply
    21,609.10x = 29,800.73 × 14,812.99
  4. Step 4: Simplify right side
    21,609.10x = 441,438,045.64
  5. Step 5: Solve for x
    x = 441,438,045.64/21,609.10
  6. Step 6: Final answer
    x = 20,428.34

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1.5x scale

Why These Related Problems?

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