Home / 30,372.40-45,563.38-8,186.66

Finding the Fourth Proportional to 30,372.40, 45,563.38 and 8,186.66

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Solution

The fourth proportional to 30,372.40, 45,563.38 and 8,186.66 is: 12,281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,372.40 : 45,563.38 = 8,186.66 : x
  2. Step 2: Convert to fraction form
    30,372.40/45,563.38 = 8,186.66/x
  3. Step 3: Cross multiply
    30,372.40x = 45,563.38 × 8,186.66
  4. Step 4: Simplify right side
    30,372.40x = 373,011,900.51
  5. Step 5: Solve for x
    x = 373,011,900.51/30,372.40
  6. Step 6: Final answer
    x = 12,281.28

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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.