Home / 19,028.20-28,499.10-9,783.40

Finding the Fourth Proportional to 19,028.20, 28,499.10 and 9,783.40

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Solution

The fourth proportional to 19,028.20, 28,499.10 and 9,783.40 is: 14,652.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,028.20 : 28,499.10 = 9,783.40 : x
  2. Step 2: Convert to fraction form
    19,028.20/28,499.10 = 9,783.40/x
  3. Step 3: Cross multiply
    19,028.20x = 28,499.10 × 9,783.40
  4. Step 4: Simplify right side
    19,028.20x = 278,818,094.94
  5. Step 5: Solve for x
    x = 278,818,094.94/19,028.20
  6. Step 6: Final answer
    x = 14,652.89

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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.