Home / 21,436.37-29,583.24-12,938.35

Finding the Fourth Proportional to 21,436.37, 29,583.24 and 12,938.35

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Solution

The fourth proportional to 21,436.37, 29,583.24 and 12,938.35 is: 17,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.37 : 29,583.24 = 12,938.35 : x
  2. Step 2: Convert to fraction form
    21,436.37/29,583.24 = 12,938.35/x
  3. Step 3: Cross multiply
    21,436.37x = 29,583.24 × 12,938.35
  4. Step 4: Simplify right side
    21,436.37x = 382,758,165.34
  5. Step 5: Solve for x
    x = 382,758,165.34/21,436.37
  6. Step 6: Final answer
    x = 17,855.55

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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.