Home / 30,666.12-45,989.46-13,131.24

Finding the Fourth Proportional to 30,666.12, 45,989.46 and 13,131.24

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Solution

The fourth proportional to 30,666.12, 45,989.46 and 13,131.24 is: 19,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,666.12 : 45,989.46 = 13,131.24 : x
  2. Step 2: Convert to fraction form
    30,666.12/45,989.46 = 13,131.24/x
  3. Step 3: Cross multiply
    30,666.12x = 45,989.46 × 13,131.24
  4. Step 4: Simplify right side
    30,666.12x = 603,898,636.73
  5. Step 5: Solve for x
    x = 603,898,636.73/30,666.12
  6. Step 6: Final answer
    x = 19,692.70

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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.