Home / 21,933.24-30,271.77-12,985.71

Finding the Fourth Proportional to 21,933.24, 30,271.77 and 12,985.71

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Solution

The fourth proportional to 21,933.24, 30,271.77 and 12,985.71 is: 17,922.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.24 : 30,271.77 = 12,985.71 : x
  2. Step 2: Convert to fraction form
    21,933.24/30,271.77 = 12,985.71/x
  3. Step 3: Cross multiply
    21,933.24x = 30,271.77 × 12,985.71
  4. Step 4: Simplify right side
    21,933.24x = 393,100,426.41
  5. Step 5: Solve for x
    x = 393,100,426.41/21,933.24
  6. Step 6: Final answer
    x = 17,922.59

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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.