Home / 21,942.24-30,275.82-12,985.26

Finding the Fourth Proportional to 21,942.24, 30,275.82 and 12,985.26

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Solution

The fourth proportional to 21,942.24, 30,275.82 and 12,985.26 is: 17,917.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,942.24 : 30,275.82 = 12,985.26 : x
  2. Step 2: Convert to fraction form
    21,942.24/30,275.82 = 12,985.26/x
  3. Step 3: Cross multiply
    21,942.24x = 30,275.82 × 12,985.26
  4. Step 4: Simplify right side
    21,942.24x = 393,139,394.41
  5. Step 5: Solve for x
    x = 393,139,394.41/21,942.24
  6. Step 6: Final answer
    x = 17,917.01

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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.