Home / 12,085.42-18,128.13-4,294.03

Finding the Fourth Proportional to 12,085.42, 18,128.13 and 4,294.03

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Solution

The fourth proportional to 12,085.42, 18,128.13 and 4,294.03 is: 6,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.42 : 18,128.13 = 4,294.03 : x
  2. Step 2: Convert to fraction form
    12,085.42/18,128.13 = 4,294.03/x
  3. Step 3: Cross multiply
    12,085.42x = 18,128.13 × 4,294.03
  4. Step 4: Simplify right side
    12,085.42x = 77,842,734.06
  5. Step 5: Solve for x
    x = 77,842,734.06/12,085.42
  6. Step 6: Final answer
    x = 6,441.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.