Home / 28,219.04-42,335.61-19,915.27

Finding the Fourth Proportional to 28,219.04, 42,335.61 and 19,915.27

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Solution

The fourth proportional to 28,219.04, 42,335.61 and 19,915.27 is: 29,877.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.04 : 42,335.61 = 19,915.27 : x
  2. Step 2: Convert to fraction form
    28,219.04/42,335.61 = 19,915.27/x
  3. Step 3: Cross multiply
    28,219.04x = 42,335.61 × 19,915.27
  4. Step 4: Simplify right side
    28,219.04x = 843,124,892.09
  5. Step 5: Solve for x
    x = 843,124,892.09/28,219.04
  6. Step 6: Final answer
    x = 29,877.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.