Home / 21,487.36-29,650.98-11,927.80

Finding the Fourth Proportional to 21,487.36, 29,650.98 and 11,927.80

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Solution

The fourth proportional to 21,487.36, 29,650.98 and 11,927.80 is: 16,459.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.36 : 29,650.98 = 11,927.80 : x
  2. Step 2: Convert to fraction form
    21,487.36/29,650.98 = 11,927.80/x
  3. Step 3: Cross multiply
    21,487.36x = 29,650.98 × 11,927.80
  4. Step 4: Simplify right side
    21,487.36x = 353,670,959.24
  5. Step 5: Solve for x
    x = 353,670,959.24/21,487.36
  6. Step 6: Final answer
    x = 16,459.49

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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.