Home / 17,122.60-25,688.40-5,435.80

Finding the Fourth Proportional to 17,122.60, 25,688.40 and 5,435.80

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Solution

The fourth proportional to 17,122.60, 25,688.40 and 5,435.80 is: 8,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,122.60 : 25,688.40 = 5,435.80 : x
  2. Step 2: Convert to fraction form
    17,122.60/25,688.40 = 5,435.80/x
  3. Step 3: Cross multiply
    17,122.60x = 25,688.40 × 5,435.80
  4. Step 4: Simplify right side
    17,122.60x = 139,637,004.72
  5. Step 5: Solve for x
    x = 139,637,004.72/17,122.60
  6. Step 6: Final answer
    x = 8,155.13

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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.