Home / 30,201.45-45,287.49-12,666.57

Finding the Fourth Proportional to 30,201.45, 45,287.49 and 12,666.57

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Solution

The fourth proportional to 30,201.45, 45,287.49 and 12,666.57 is: 18,993.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,201.45 : 45,287.49 = 12,666.57 : x
  2. Step 2: Convert to fraction form
    30,201.45/45,287.49 = 12,666.57/x
  3. Step 3: Cross multiply
    30,201.45x = 45,287.49 × 12,666.57
  4. Step 4: Simplify right side
    30,201.45x = 573,637,162.21
  5. Step 5: Solve for x
    x = 573,637,162.21/30,201.45
  6. Step 6: Final answer
    x = 18,993.70

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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.