Home / 29,990.08-45,005.22-12,459.88

Finding the Fourth Proportional to 29,990.08, 45,005.22 and 12,459.88

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Solution

The fourth proportional to 29,990.08, 45,005.22 and 12,459.88 is: 18,698.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,990.08 : 45,005.22 = 12,459.88 : x
  2. Step 2: Convert to fraction form
    29,990.08/45,005.22 = 12,459.88/x
  3. Step 3: Cross multiply
    29,990.08x = 45,005.22 × 12,459.88
  4. Step 4: Simplify right side
    29,990.08x = 560,759,640.57
  5. Step 5: Solve for x
    x = 560,759,640.57/29,990.08
  6. Step 6: Final answer
    x = 18,698.17

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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.