Home / 21,494.40-29,664-12,065.28

Finding the Fourth Proportional to 21,494.40, 29,664 and 12,065.28

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Solution

The fourth proportional to 21,494.40, 29,664 and 12,065.28 is: 16,651.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,494.40 : 29,664 = 12,065.28 : x
  2. Step 2: Convert to fraction form
    21,494.40/29,664 = 12,065.28/x
  3. Step 3: Cross multiply
    21,494.40x = 29,664 × 12,065.28
  4. Step 4: Simplify right side
    21,494.40x = 357,904,465.92
  5. Step 5: Solve for x
    x = 357,904,465.92/21,494.40
  6. Step 6: Final answer
    x = 16,651.06

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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.