Home / 21,326.41-29,430.49-11,895.58

Finding the Fourth Proportional to 21,326.41, 29,430.49 and 11,895.58

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Solution

The fourth proportional to 21,326.41, 29,430.49 and 11,895.58 is: 16,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.41 : 29,430.49 = 11,895.58 : x
  2. Step 2: Convert to fraction form
    21,326.41/29,430.49 = 11,895.58/x
  3. Step 3: Cross multiply
    21,326.41x = 29,430.49 × 11,895.58
  4. Step 4: Simplify right side
    21,326.41x = 350,092,688.76
  5. Step 5: Solve for x
    x = 350,092,688.76/21,326.41
  6. Step 6: Final answer
    x = 16,415.92

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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.