Home / 21,265.95-29,346.78-11,705.63

Finding the Fourth Proportional to 21,265.95, 29,346.78 and 11,705.63

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Solution

The fourth proportional to 21,265.95, 29,346.78 and 11,705.63 is: 16,153.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.95 : 29,346.78 = 11,705.63 : x
  2. Step 2: Convert to fraction form
    21,265.95/29,346.78 = 11,705.63/x
  3. Step 3: Cross multiply
    21,265.95x = 29,346.78 × 11,705.63
  4. Step 4: Simplify right side
    21,265.95x = 343,522,548.37
  5. Step 5: Solve for x
    x = 343,522,548.37/21,265.95
  6. Step 6: Final answer
    x = 16,153.64

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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.