Home / 21,703.15-29,950.18-12,272.05

Finding the Fourth Proportional to 21,703.15, 29,950.18 and 12,272.05

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Solution

The fourth proportional to 21,703.15, 29,950.18 and 12,272.05 is: 16,935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.15 : 29,950.18 = 12,272.05 : x
  2. Step 2: Convert to fraction form
    21,703.15/29,950.18 = 12,272.05/x
  3. Step 3: Cross multiply
    21,703.15x = 29,950.18 × 12,272.05
  4. Step 4: Simplify right side
    21,703.15x = 367,550,106.47
  5. Step 5: Solve for x
    x = 367,550,106.47/21,703.15
  6. Step 6: Final answer
    x = 16,935.33

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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.