Home / 18,085.40-27,129.45-6,397.10

Finding the Fourth Proportional to 18,085.40, 27,129.45 and 6,397.10

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Solution

The fourth proportional to 18,085.40, 27,129.45 and 6,397.10 is: 9,596.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.40 : 27,129.45 = 6,397.10 : x
  2. Step 2: Convert to fraction form
    18,085.40/27,129.45 = 6,397.10/x
  3. Step 3: Cross multiply
    18,085.40x = 27,129.45 × 6,397.10
  4. Step 4: Simplify right side
    18,085.40x = 173,549,804.60
  5. Step 5: Solve for x
    x = 173,549,804.60/18,085.40
  6. Step 6: Final answer
    x = 9,596.13

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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.