Home / 21,674.16-29,795.45-18,638.15

Finding the Fourth Proportional to 21,674.16, 29,795.45 and 18,638.15

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Solution

The fourth proportional to 21,674.16, 29,795.45 and 18,638.15 is: 25,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,674.16 : 29,795.45 = 18,638.15 : x
  2. Step 2: Convert to fraction form
    21,674.16/29,795.45 = 18,638.15/x
  3. Step 3: Cross multiply
    21,674.16x = 29,795.45 × 18,638.15
  4. Step 4: Simplify right side
    21,674.16x = 555,331,824.25
  5. Step 5: Solve for x
    x = 555,331,824.25/21,674.16
  6. Step 6: Final answer
    x = 25,621.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.