Home / 21,562.30-29,745.08-12,603.95

Finding the Fourth Proportional to 21,562.30, 29,745.08 and 12,603.95

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Solution

The fourth proportional to 21,562.30, 29,745.08 and 12,603.95 is: 17,387.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.30 : 29,745.08 = 12,603.95 : x
  2. Step 2: Convert to fraction form
    21,562.30/29,745.08 = 12,603.95/x
  3. Step 3: Cross multiply
    21,562.30x = 29,745.08 × 12,603.95
  4. Step 4: Simplify right side
    21,562.30x = 374,905,352.34
  5. Step 5: Solve for x
    x = 374,905,352.34/21,562.30
  6. Step 6: Final answer
    x = 17,387.08

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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.