Home / 21,252.27-29,334.32-14,178.68

Finding the Fourth Proportional to 21,252.27, 29,334.32 and 14,178.68

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Solution

The fourth proportional to 21,252.27, 29,334.32 and 14,178.68 is: 19,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.27 : 29,334.32 = 14,178.68 : x
  2. Step 2: Convert to fraction form
    21,252.27/29,334.32 = 14,178.68/x
  3. Step 3: Cross multiply
    21,252.27x = 29,334.32 × 14,178.68
  4. Step 4: Simplify right side
    21,252.27x = 415,921,881.91
  5. Step 5: Solve for x
    x = 415,921,881.91/21,252.27
  6. Step 6: Final answer
    x = 19,570.70

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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.