Home / 21,696.79-29,925.96-14,129.11

Finding the Fourth Proportional to 21,696.79, 29,925.96 and 14,129.11

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Solution

The fourth proportional to 21,696.79, 29,925.96 and 14,129.11 is: 19,488.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,696.79 : 29,925.96 = 14,129.11 : x
  2. Step 2: Convert to fraction form
    21,696.79/29,925.96 = 14,129.11/x
  3. Step 3: Cross multiply
    21,696.79x = 29,925.96 × 14,129.11
  4. Step 4: Simplify right side
    21,696.79x = 422,827,180.70
  5. Step 5: Solve for x
    x = 422,827,180.70/21,696.79
  6. Step 6: Final answer
    x = 19,488.01

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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.