Home / 21,211.48-29,272.02-11,780.20

Finding the Fourth Proportional to 21,211.48, 29,272.02 and 11,780.20

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Solution

The fourth proportional to 21,211.48, 29,272.02 and 11,780.20 is: 16,256.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.48 : 29,272.02 = 11,780.20 : x
  2. Step 2: Convert to fraction form
    21,211.48/29,272.02 = 11,780.20/x
  3. Step 3: Cross multiply
    21,211.48x = 29,272.02 × 11,780.20
  4. Step 4: Simplify right side
    21,211.48x = 344,830,250.00
  5. Step 5: Solve for x
    x = 344,830,250.00/21,211.48
  6. Step 6: Final answer
    x = 16,256.77

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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.