Home / 30,747.20-46,137.20-13,215.96

Finding the Fourth Proportional to 30,747.20, 46,137.20 and 13,215.96

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Solution

The fourth proportional to 30,747.20, 46,137.20 and 13,215.96 is: 19,830.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,747.20 : 46,137.20 = 13,215.96 : x
  2. Step 2: Convert to fraction form
    30,747.20/46,137.20 = 13,215.96/x
  3. Step 3: Cross multiply
    30,747.20x = 46,137.20 × 13,215.96
  4. Step 4: Simplify right side
    30,747.20x = 609,747,323.63
  5. Step 5: Solve for x
    x = 609,747,323.63/30,747.20
  6. Step 6: Final answer
    x = 19,830.99

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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.