Home / 21,412.54-29,549.37-11,981.08

Finding the Fourth Proportional to 21,412.54, 29,549.37 and 11,981.08

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Solution

The fourth proportional to 21,412.54, 29,549.37 and 11,981.08 is: 16,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,412.54 : 29,549.37 = 11,981.08 : x
  2. Step 2: Convert to fraction form
    21,412.54/29,549.37 = 11,981.08/x
  3. Step 3: Cross multiply
    21,412.54x = 29,549.37 × 11,981.08
  4. Step 4: Simplify right side
    21,412.54x = 354,033,365.92
  5. Step 5: Solve for x
    x = 354,033,365.92/21,412.54
  6. Step 6: Final answer
    x = 16,533.93

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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.