Home / 13,435.74-18,550.55-8,402.40

Finding the Fourth Proportional to 13,435.74, 18,550.55 and 8,402.40

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Solution

The fourth proportional to 13,435.74, 18,550.55 and 8,402.40 is: 11,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.74 : 18,550.55 = 8,402.40 : x
  2. Step 2: Convert to fraction form
    13,435.74/18,550.55 = 8,402.40/x
  3. Step 3: Cross multiply
    13,435.74x = 18,550.55 × 8,402.40
  4. Step 4: Simplify right side
    13,435.74x = 155,869,162.33
  5. Step 5: Solve for x
    x = 155,869,162.33/13,435.74
  6. Step 6: Final answer
    x = 11,601.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.