Home / 30,515.08-45,783.60-18,814.72

Finding the Fourth Proportional to 30,515.08, 45,783.60 and 18,814.72

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Solution

The fourth proportional to 30,515.08, 45,783.60 and 18,814.72 is: 28,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.08 : 45,783.60 = 18,814.72 : x
  2. Step 2: Convert to fraction form
    30,515.08/45,783.60 = 18,814.72/x
  3. Step 3: Cross multiply
    30,515.08x = 45,783.60 × 18,814.72
  4. Step 4: Simplify right side
    30,515.08x = 861,405,614.59
  5. Step 5: Solve for x
    x = 861,405,614.59/30,515.08
  6. Step 6: Final answer
    x = 28,228.85

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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.