Home / 21,038.29-29,036-13,493.14

Finding the Fourth Proportional to 21,038.29, 29,036 and 13,493.14

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Solution

The fourth proportional to 21,038.29, 29,036 and 13,493.14 is: 18,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038.29 : 29,036 = 13,493.14 : x
  2. Step 2: Convert to fraction form
    21,038.29/29,036 = 13,493.14/x
  3. Step 3: Cross multiply
    21,038.29x = 29,036 × 13,493.14
  4. Step 4: Simplify right side
    21,038.29x = 391,786,813.04
  5. Step 5: Solve for x
    x = 391,786,813.04/21,038.29
  6. Step 6: Final answer
    x = 18,622.56

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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.