Home / 21,146.61-29,148.32-14,338.43

Finding the Fourth Proportional to 21,146.61, 29,148.32 and 14,338.43

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Solution

The fourth proportional to 21,146.61, 29,148.32 and 14,338.43 is: 19,763.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.61 : 29,148.32 = 14,338.43 : x
  2. Step 2: Convert to fraction form
    21,146.61/29,148.32 = 14,338.43/x
  3. Step 3: Cross multiply
    21,146.61x = 29,148.32 × 14,338.43
  4. Step 4: Simplify right side
    21,146.61x = 417,940,928.50
  5. Step 5: Solve for x
    x = 417,940,928.50/21,146.61
  6. Step 6: Final answer
    x = 19,763.97

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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.