Home / 30,341.18-45,494.64-12,561.80

Finding the Fourth Proportional to 30,341.18, 45,494.64 and 12,561.80

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Solution

The fourth proportional to 30,341.18, 45,494.64 and 12,561.80 is: 18,835.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,341.18 : 45,494.64 = 12,561.80 : x
  2. Step 2: Convert to fraction form
    30,341.18/45,494.64 = 12,561.80/x
  3. Step 3: Cross multiply
    30,341.18x = 45,494.64 × 12,561.80
  4. Step 4: Simplify right side
    30,341.18x = 571,494,568.75
  5. Step 5: Solve for x
    x = 571,494,568.75/30,341.18
  6. Step 6: Final answer
    x = 18,835.61

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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.