Home / 21,814.04-30,098.66-12,858.28

Finding the Fourth Proportional to 21,814.04, 30,098.66 and 12,858.28

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Solution

The fourth proportional to 21,814.04, 30,098.66 and 12,858.28 is: 17,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.04 : 30,098.66 = 12,858.28 : x
  2. Step 2: Convert to fraction form
    21,814.04/30,098.66 = 12,858.28/x
  3. Step 3: Cross multiply
    21,814.04x = 30,098.66 × 12,858.28
  4. Step 4: Simplify right side
    21,814.04x = 387,016,858.37
  5. Step 5: Solve for x
    x = 387,016,858.37/21,814.04
  6. Step 6: Final answer
    x = 17,741.64

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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.