Home / 30,085.15-45,131.90-12,550.94

Finding the Fourth Proportional to 30,085.15, 45,131.90 and 12,550.94

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Solution

The fourth proportional to 30,085.15, 45,131.90 and 12,550.94 is: 18,828.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,085.15 : 45,131.90 = 12,550.94 : x
  2. Step 2: Convert to fraction form
    30,085.15/45,131.90 = 12,550.94/x
  3. Step 3: Cross multiply
    30,085.15x = 45,131.90 × 12,550.94
  4. Step 4: Simplify right side
    30,085.15x = 566,447,800.36
  5. Step 5: Solve for x
    x = 566,447,800.36/30,085.15
  6. Step 6: Final answer
    x = 18,828.16

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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.