Home / 21,368.61-29,489.27-11,937.78

Finding the Fourth Proportional to 21,368.61, 29,489.27 and 11,937.78

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Solution

The fourth proportional to 21,368.61, 29,489.27 and 11,937.78 is: 16,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.61 : 29,489.27 = 11,937.78 : x
  2. Step 2: Convert to fraction form
    21,368.61/29,489.27 = 11,937.78/x
  3. Step 3: Cross multiply
    21,368.61x = 29,489.27 × 11,937.78
  4. Step 4: Simplify right side
    21,368.61x = 352,036,357.93
  5. Step 5: Solve for x
    x = 352,036,357.93/21,368.61
  6. Step 6: Final answer
    x = 16,474.46

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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.