Home / 21,829.53-30,125.49-12,271.08

Finding the Fourth Proportional to 21,829.53, 30,125.49 and 12,271.08

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Solution

The fourth proportional to 21,829.53, 30,125.49 and 12,271.08 is: 16,934.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.53 : 30,125.49 = 12,271.08 : x
  2. Step 2: Convert to fraction form
    21,829.53/30,125.49 = 12,271.08/x
  3. Step 3: Cross multiply
    21,829.53x = 30,125.49 × 12,271.08
  4. Step 4: Simplify right side
    21,829.53x = 369,672,297.83
  5. Step 5: Solve for x
    x = 369,672,297.83/21,829.53
  6. Step 6: Final answer
    x = 16,934.51

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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.