Home / 21,325.64-29,429.70-11,894.92

Finding the Fourth Proportional to 21,325.64, 29,429.70 and 11,894.92

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Solution

The fourth proportional to 21,325.64, 29,429.70 and 11,894.92 is: 16,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.64 : 29,429.70 = 11,894.92 : x
  2. Step 2: Convert to fraction form
    21,325.64/29,429.70 = 11,894.92/x
  3. Step 3: Cross multiply
    21,325.64x = 29,429.70 × 11,894.92
  4. Step 4: Simplify right side
    21,325.64x = 350,063,927.12
  5. Step 5: Solve for x
    x = 350,063,927.12/21,325.64
  6. Step 6: Final answer
    x = 16,415.17

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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.