Home / 19,200.30-28,800.45-18,106.80

Finding the Fourth Proportional to 19,200.30, 28,800.45 and 18,106.80

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Solution

The fourth proportional to 19,200.30, 28,800.45 and 18,106.80 is: 27,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,200.30 : 28,800.45 = 18,106.80 : x
  2. Step 2: Convert to fraction form
    19,200.30/28,800.45 = 18,106.80/x
  3. Step 3: Cross multiply
    19,200.30x = 28,800.45 × 18,106.80
  4. Step 4: Simplify right side
    19,200.30x = 521,483,988.06
  5. Step 5: Solve for x
    x = 521,483,988.06/19,200.30
  6. Step 6: Final answer
    x = 27,160.20

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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.