Home / 21,000.48-28,984.86-12,054.03

Finding the Fourth Proportional to 21,000.48, 28,984.86 and 12,054.03

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Solution

The fourth proportional to 21,000.48, 28,984.86 and 12,054.03 is: 16,636.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.48 : 28,984.86 = 12,054.03 : x
  2. Step 2: Convert to fraction form
    21,000.48/28,984.86 = 12,054.03/x
  3. Step 3: Cross multiply
    21,000.48x = 28,984.86 × 12,054.03
  4. Step 4: Simplify right side
    21,000.48x = 349,384,371.99
  5. Step 5: Solve for x
    x = 349,384,371.99/21,000.48
  6. Step 6: Final answer
    x = 16,636.97

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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.