Home / 21,877.98-30,128.04-19,005.41

Finding the Fourth Proportional to 21,877.98, 30,128.04 and 19,005.41

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Solution

The fourth proportional to 21,877.98, 30,128.04 and 19,005.41 is: 26,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.98 : 30,128.04 = 19,005.41 : x
  2. Step 2: Convert to fraction form
    21,877.98/30,128.04 = 19,005.41/x
  3. Step 3: Cross multiply
    21,877.98x = 30,128.04 × 19,005.41
  4. Step 4: Simplify right side
    21,877.98x = 572,595,752.70
  5. Step 5: Solve for x
    x = 572,595,752.70/21,877.98
  6. Step 6: Final answer
    x = 26,172.24

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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.