Home / 19,974.80-29,962.20-8,877.20

Finding the Fourth Proportional to 19,974.80, 29,962.20 and 8,877.20

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Solution

The fourth proportional to 19,974.80, 29,962.20 and 8,877.20 is: 13,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,974.80 : 29,962.20 = 8,877.20 : x
  2. Step 2: Convert to fraction form
    19,974.80/29,962.20 = 8,877.20/x
  3. Step 3: Cross multiply
    19,974.80x = 29,962.20 × 8,877.20
  4. Step 4: Simplify right side
    19,974.80x = 265,980,441.84
  5. Step 5: Solve for x
    x = 265,980,441.84/19,974.80
  6. Step 6: Final answer
    x = 13,315.80

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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.