Home / 19,025.20-28,494.60-9,780.40

Finding the Fourth Proportional to 19,025.20, 28,494.60 and 9,780.40

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Solution

The fourth proportional to 19,025.20, 28,494.60 and 9,780.40 is: 14,648.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,025.20 : 28,494.60 = 9,780.40 : x
  2. Step 2: Convert to fraction form
    19,025.20/28,494.60 = 9,780.40/x
  3. Step 3: Cross multiply
    19,025.20x = 28,494.60 × 9,780.40
  4. Step 4: Simplify right side
    19,025.20x = 278,688,585.84
  5. Step 5: Solve for x
    x = 278,688,585.84/19,025.20
  6. Step 6: Final answer
    x = 14,648.39

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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.