Home / 30,302.94-45,457.48-8,118.55

Finding the Fourth Proportional to 30,302.94, 45,457.48 and 8,118.55

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Solution

The fourth proportional to 30,302.94, 45,457.48 and 8,118.55 is: 12,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,302.94 : 45,457.48 = 8,118.55 : x
  2. Step 2: Convert to fraction form
    30,302.94/45,457.48 = 8,118.55/x
  3. Step 3: Cross multiply
    30,302.94x = 45,457.48 × 8,118.55
  4. Step 4: Simplify right side
    30,302.94x = 369,048,996.24
  5. Step 5: Solve for x
    x = 369,048,996.24/30,302.94
  6. Step 6: Final answer
    x = 12,178.66

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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.