Home / 21,084.12-29,091.42-12,703.32

Finding the Fourth Proportional to 21,084.12, 29,091.42 and 12,703.32

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Solution

The fourth proportional to 21,084.12, 29,091.42 and 12,703.32 is: 17,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.12 : 29,091.42 = 12,703.32 : x
  2. Step 2: Convert to fraction form
    21,084.12/29,091.42 = 12,703.32/x
  3. Step 3: Cross multiply
    21,084.12x = 29,091.42 × 12,703.32
  4. Step 4: Simplify right side
    21,084.12x = 369,557,617.51
  5. Step 5: Solve for x
    x = 369,557,617.51/21,084.12
  6. Step 6: Final answer
    x = 17,527.77

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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.