Home / 21,236.24-29,302.80-12,281.96

Finding the Fourth Proportional to 21,236.24, 29,302.80 and 12,281.96

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Solution

The fourth proportional to 21,236.24, 29,302.80 and 12,281.96 is: 16,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.24 : 29,302.80 = 12,281.96 : x
  2. Step 2: Convert to fraction form
    21,236.24/29,302.80 = 12,281.96/x
  3. Step 3: Cross multiply
    21,236.24x = 29,302.80 × 12,281.96
  4. Step 4: Simplify right side
    21,236.24x = 359,895,817.49
  5. Step 5: Solve for x
    x = 359,895,817.49/21,236.24
  6. Step 6: Final answer
    x = 16,947.25

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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.