Home / 21,331.08-29,437.02-11,900.52

Finding the Fourth Proportional to 21,331.08, 29,437.02 and 11,900.52

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Solution

The fourth proportional to 21,331.08, 29,437.02 and 11,900.52 is: 16,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.08 : 29,437.02 = 11,900.52 : x
  2. Step 2: Convert to fraction form
    21,331.08/29,437.02 = 11,900.52/x
  3. Step 3: Cross multiply
    21,331.08x = 29,437.02 × 11,900.52
  4. Step 4: Simplify right side
    21,331.08x = 350,315,845.25
  5. Step 5: Solve for x
    x = 350,315,845.25/21,331.08
  6. Step 6: Final answer
    x = 16,422.79

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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.