Home / 19,346.40-28,987.20-12,769.20

Finding the Fourth Proportional to 19,346.40, 28,987.20 and 12,769.20

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Solution

The fourth proportional to 19,346.40, 28,987.20 and 12,769.20 is: 19,132.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,346.40 : 28,987.20 = 12,769.20 : x
  2. Step 2: Convert to fraction form
    19,346.40/28,987.20 = 12,769.20/x
  3. Step 3: Cross multiply
    19,346.40x = 28,987.20 × 12,769.20
  4. Step 4: Simplify right side
    19,346.40x = 370,143,354.24
  5. Step 5: Solve for x
    x = 370,143,354.24/19,346.40
  6. Step 6: Final answer
    x = 19,132.42

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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.