Home / 21,368.72-29,489.80-11,937.04

Finding the Fourth Proportional to 21,368.72, 29,489.80 and 11,937.04

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Solution

The fourth proportional to 21,368.72, 29,489.80 and 11,937.04 is: 16,473.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.72 : 29,489.80 = 11,937.04 : x
  2. Step 2: Convert to fraction form
    21,368.72/29,489.80 = 11,937.04/x
  3. Step 3: Cross multiply
    21,368.72x = 29,489.80 × 11,937.04
  4. Step 4: Simplify right side
    21,368.72x = 352,020,922.19
  5. Step 5: Solve for x
    x = 352,020,922.19/21,368.72
  6. Step 6: Final answer
    x = 16,473.66

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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.