Home / 30,056.91-45,101.09-12,300.75

Finding the Fourth Proportional to 30,056.91, 45,101.09 and 12,300.75

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Solution

The fourth proportional to 30,056.91, 45,101.09 and 12,300.75 is: 18,457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,056.91 : 45,101.09 = 12,300.75 : x
  2. Step 2: Convert to fraction form
    30,056.91/45,101.09 = 12,300.75/x
  3. Step 3: Cross multiply
    30,056.91x = 45,101.09 × 12,300.75
  4. Step 4: Simplify right side
    30,056.91x = 554,777,232.82
  5. Step 5: Solve for x
    x = 554,777,232.82/30,056.91
  6. Step 6: Final answer
    x = 18,457.56

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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.