Home / 21,155.94-29,188.62-14,083.56

Finding the Fourth Proportional to 21,155.94, 29,188.62 and 14,083.56

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Solution

The fourth proportional to 21,155.94, 29,188.62 and 14,083.56 is: 19,430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.94 : 29,188.62 = 14,083.56 : x
  2. Step 2: Convert to fraction form
    21,155.94/29,188.62 = 14,083.56/x
  3. Step 3: Cross multiply
    21,155.94x = 29,188.62 × 14,083.56
  4. Step 4: Simplify right side
    21,155.94x = 411,079,681.09
  5. Step 5: Solve for x
    x = 411,079,681.09/21,155.94
  6. Step 6: Final answer
    x = 19,430.93

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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.