Home / 21,081.48-29,093.57-12,130.35

Finding the Fourth Proportional to 21,081.48, 29,093.57 and 12,130.35

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Solution

The fourth proportional to 21,081.48, 29,093.57 and 12,130.35 is: 16,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.48 : 29,093.57 = 12,130.35 : x
  2. Step 2: Convert to fraction form
    21,081.48/29,093.57 = 12,130.35/x
  3. Step 3: Cross multiply
    21,081.48x = 29,093.57 × 12,130.35
  4. Step 4: Simplify right side
    21,081.48x = 352,915,186.85
  5. Step 5: Solve for x
    x = 352,915,186.85/21,081.48
  6. Step 6: Final answer
    x = 16,740.53

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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.