Home / 21,603.95-29,813.76-12,172.52

Finding the Fourth Proportional to 21,603.95, 29,813.76 and 12,172.52

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Solution

The fourth proportional to 21,603.95, 29,813.76 and 12,172.52 is: 16,798.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.95 : 29,813.76 = 12,172.52 : x
  2. Step 2: Convert to fraction form
    21,603.95/29,813.76 = 12,172.52/x
  3. Step 3: Cross multiply
    21,603.95x = 29,813.76 × 12,172.52
  4. Step 4: Simplify right side
    21,603.95x = 362,908,589.88
  5. Step 5: Solve for x
    x = 362,908,589.88/21,603.95
  6. Step 6: Final answer
    x = 16,798.25

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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.