Home / 18,962.60-28,420.83-13,417.54

Finding the Fourth Proportional to 18,962.60, 28,420.83 and 13,417.54

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Solution

The fourth proportional to 18,962.60, 28,420.83 and 13,417.54 is: 20,109.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,962.60 : 28,420.83 = 13,417.54 : x
  2. Step 2: Convert to fraction form
    18,962.60/28,420.83 = 13,417.54/x
  3. Step 3: Cross multiply
    18,962.60x = 28,420.83 × 13,417.54
  4. Step 4: Simplify right side
    18,962.60x = 381,337,623.36
  5. Step 5: Solve for x
    x = 381,337,623.36/18,962.60
  6. Step 6: Final answer
    x = 20,109.99

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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.