Home / 30,055.09-45,086.73-12,520.81

Finding the Fourth Proportional to 30,055.09, 45,086.73 and 12,520.81

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Solution

The fourth proportional to 30,055.09, 45,086.73 and 12,520.81 is: 18,782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,055.09 : 45,086.73 = 12,520.81 : x
  2. Step 2: Convert to fraction form
    30,055.09/45,086.73 = 12,520.81/x
  3. Step 3: Cross multiply
    30,055.09x = 45,086.73 × 12,520.81
  4. Step 4: Simplify right side
    30,055.09x = 564,522,492.57
  5. Step 5: Solve for x
    x = 564,522,492.57/30,055.09
  6. Step 6: Final answer
    x = 18,782.93

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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.