Home / 21,160.94-29,211.39-14,812.46

Finding the Fourth Proportional to 21,160.94, 29,211.39 and 14,812.46

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Solution

The fourth proportional to 21,160.94, 29,211.39 and 14,812.46 is: 20,447.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.94 : 29,211.39 = 14,812.46 : x
  2. Step 2: Convert to fraction form
    21,160.94/29,211.39 = 14,812.46/x
  3. Step 3: Cross multiply
    21,160.94x = 29,211.39 × 14,812.46
  4. Step 4: Simplify right side
    21,160.94x = 432,692,399.86
  5. Step 5: Solve for x
    x = 432,692,399.86/21,160.94
  6. Step 6: Final answer
    x = 20,447.70

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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.