Home / 21,210.01-29,242.79-13,249.33

Finding the Fourth Proportional to 21,210.01, 29,242.79 and 13,249.33

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Solution

The fourth proportional to 21,210.01, 29,242.79 and 13,249.33 is: 18,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.01 : 29,242.79 = 13,249.33 : x
  2. Step 2: Convert to fraction form
    21,210.01/29,242.79 = 13,249.33/x
  3. Step 3: Cross multiply
    21,210.01x = 29,242.79 × 13,249.33
  4. Step 4: Simplify right side
    21,210.01x = 387,447,285.16
  5. Step 5: Solve for x
    x = 387,447,285.16/21,210.01
  6. Step 6: Final answer
    x = 18,267.19

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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.