Home / 21,000.75-28,984.82-12,048.23

Finding the Fourth Proportional to 21,000.75, 28,984.82 and 12,048.23

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Solution

The fourth proportional to 21,000.75, 28,984.82 and 12,048.23 is: 16,628.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.75 : 28,984.82 = 12,048.23 : x
  2. Step 2: Convert to fraction form
    21,000.75/28,984.82 = 12,048.23/x
  3. Step 3: Cross multiply
    21,000.75x = 28,984.82 × 12,048.23
  4. Step 4: Simplify right side
    21,000.75x = 349,215,572.70
  5. Step 5: Solve for x
    x = 349,215,572.70/21,000.75
  6. Step 6: Final answer
    x = 16,628.72

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Double scale
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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.