Home / 19,867.80-29,801.72-8,172.84

Finding the Fourth Proportional to 19,867.80, 29,801.72 and 8,172.84

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Solution

The fourth proportional to 19,867.80, 29,801.72 and 8,172.84 is: 12,259.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,867.80 : 29,801.72 = 8,172.84 : x
  2. Step 2: Convert to fraction form
    19,867.80/29,801.72 = 8,172.84/x
  3. Step 3: Cross multiply
    19,867.80x = 29,801.72 × 8,172.84
  4. Step 4: Simplify right side
    19,867.80x = 243,564,689.28
  5. Step 5: Solve for x
    x = 243,564,689.28/19,867.80
  6. Step 6: Final answer
    x = 12,259.27

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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.