Home / 22,457.40-30,990.64-12,385.80

Finding the Fourth Proportional to 22,457.40, 30,990.64 and 12,385.80

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Solution

The fourth proportional to 22,457.40, 30,990.64 and 12,385.80 is: 17,092.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,457.40 : 30,990.64 = 12,385.80 : x
  2. Step 2: Convert to fraction form
    22,457.40/30,990.64 = 12,385.80/x
  3. Step 3: Cross multiply
    22,457.40x = 30,990.64 × 12,385.80
  4. Step 4: Simplify right side
    22,457.40x = 383,843,868.91
  5. Step 5: Solve for x
    x = 383,843,868.91/22,457.40
  6. Step 6: Final answer
    x = 17,092.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.