Home / 21,504.04-29,678.82-13,125.32

Finding the Fourth Proportional to 21,504.04, 29,678.82 and 13,125.32

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Solution

The fourth proportional to 21,504.04, 29,678.82 and 13,125.32 is: 18,114.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,504.04 : 29,678.82 = 13,125.32 : x
  2. Step 2: Convert to fraction form
    21,504.04/29,678.82 = 13,125.32/x
  3. Step 3: Cross multiply
    21,504.04x = 29,678.82 × 13,125.32
  4. Step 4: Simplify right side
    21,504.04x = 389,544,009.72
  5. Step 5: Solve for x
    x = 389,544,009.72/21,504.04
  6. Step 6: Final answer
    x = 18,114.92

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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.