Home / 18,508.98-25,527.99-12,128.58

Finding the Fourth Proportional to 18,508.98, 25,527.99 and 12,128.58

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Solution

The fourth proportional to 18,508.98, 25,527.99 and 12,128.58 is: 16,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.98 : 25,527.99 = 12,128.58 : x
  2. Step 2: Convert to fraction form
    18,508.98/25,527.99 = 12,128.58/x
  3. Step 3: Cross multiply
    18,508.98x = 25,527.99 × 12,128.58
  4. Step 4: Simplify right side
    18,508.98x = 309,618,268.95
  5. Step 5: Solve for x
    x = 309,618,268.95/18,508.98
  6. Step 6: Final answer
    x = 16,728.00

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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.