Home / 21,554.51-29,740.76-12,600.28

Finding the Fourth Proportional to 21,554.51, 29,740.76 and 12,600.28

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Solution

The fourth proportional to 21,554.51, 29,740.76 and 12,600.28 is: 17,385.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.51 : 29,740.76 = 12,600.28 : x
  2. Step 2: Convert to fraction form
    21,554.51/29,740.76 = 12,600.28/x
  3. Step 3: Cross multiply
    21,554.51x = 29,740.76 × 12,600.28
  4. Step 4: Simplify right side
    21,554.51x = 374,741,903.41
  5. Step 5: Solve for x
    x = 374,741,903.41/21,554.51
  6. Step 6: Final answer
    x = 17,385.78

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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.