Home / 13,435.60-20,153.42-5,113.68

Finding the Fourth Proportional to 13,435.60, 20,153.42 and 5,113.68

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Solution

The fourth proportional to 13,435.60, 20,153.42 and 5,113.68 is: 7,670.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.60 : 20,153.42 = 5,113.68 : x
  2. Step 2: Convert to fraction form
    13,435.60/20,153.42 = 5,113.68/x
  3. Step 3: Cross multiply
    13,435.60x = 20,153.42 × 5,113.68
  4. Step 4: Simplify right side
    13,435.60x = 103,058,140.79
  5. Step 5: Solve for x
    x = 103,058,140.79/13,435.60
  6. Step 6: Final answer
    x = 7,670.53

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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.