Home / 12,085.13-18,128.30-4,294.55

Finding the Fourth Proportional to 12,085.13, 18,128.30 and 4,294.55

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Solution

The fourth proportional to 12,085.13, 18,128.30 and 4,294.55 is: 6,442.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.13 : 18,128.30 = 4,294.55 : x
  2. Step 2: Convert to fraction form
    12,085.13/18,128.30 = 4,294.55/x
  3. Step 3: Cross multiply
    12,085.13x = 18,128.30 × 4,294.55
  4. Step 4: Simplify right side
    12,085.13x = 77,852,890.77
  5. Step 5: Solve for x
    x = 77,852,890.77/12,085.13
  6. Step 6: Final answer
    x = 6,442.04

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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.