Home / 31,191.24-46,798.50-18,720.21

Finding the Fourth Proportional to 31,191.24, 46,798.50 and 18,720.21

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Solution

The fourth proportional to 31,191.24, 46,798.50 and 18,720.21 is: 28,087.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,191.24 : 46,798.50 = 18,720.21 : x
  2. Step 2: Convert to fraction form
    31,191.24/46,798.50 = 18,720.21/x
  3. Step 3: Cross multiply
    31,191.24x = 46,798.50 × 18,720.21
  4. Step 4: Simplify right side
    31,191.24x = 876,077,747.69
  5. Step 5: Solve for x
    x = 876,077,747.69/31,191.24
  6. Step 6: Final answer
    x = 28,087.30

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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.