Home / 21,558.96-29,752.80-12,485.52

Finding the Fourth Proportional to 21,558.96, 29,752.80 and 12,485.52

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Solution

The fourth proportional to 21,558.96, 29,752.80 and 12,485.52 is: 17,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.96 : 29,752.80 = 12,485.52 : x
  2. Step 2: Convert to fraction form
    21,558.96/29,752.80 = 12,485.52/x
  3. Step 3: Cross multiply
    21,558.96x = 29,752.80 × 12,485.52
  4. Step 4: Simplify right side
    21,558.96x = 371,479,179.46
  5. Step 5: Solve for x
    x = 371,479,179.46/21,558.96
  6. Step 6: Final answer
    x = 17,230.85

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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.