Home / 21,491.84-32,128.32-19,265.60

Finding the Fourth Proportional to 21,491.84, 32,128.32 and 19,265.60

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Solution

The fourth proportional to 21,491.84, 32,128.32 and 19,265.60 is: 28,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.84 : 32,128.32 = 19,265.60 : x
  2. Step 2: Convert to fraction form
    21,491.84/32,128.32 = 19,265.60/x
  3. Step 3: Cross multiply
    21,491.84x = 32,128.32 × 19,265.60
  4. Step 4: Simplify right side
    21,491.84x = 618,971,361.79
  5. Step 5: Solve for x
    x = 618,971,361.79/21,491.84
  6. Step 6: Final answer
    x = 28,800.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.