Home / 21,335.40-29,442.75-11,903.94

Finding the Fourth Proportional to 21,335.40, 29,442.75 and 11,903.94

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Solution

The fourth proportional to 21,335.40, 29,442.75 and 11,903.94 is: 16,427.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.40 : 29,442.75 = 11,903.94 : x
  2. Step 2: Convert to fraction form
    21,335.40/29,442.75 = 11,903.94/x
  3. Step 3: Cross multiply
    21,335.40x = 29,442.75 × 11,903.94
  4. Step 4: Simplify right side
    21,335.40x = 350,484,729.44
  5. Step 5: Solve for x
    x = 350,484,729.44/21,335.40
  6. Step 6: Final answer
    x = 16,427.38

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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.