Home / 13,155.36-18,153.93-7,847.43

Finding the Fourth Proportional to 13,155.36, 18,153.93 and 7,847.43

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Solution

The fourth proportional to 13,155.36, 18,153.93 and 7,847.43 is: 10,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.36 : 18,153.93 = 7,847.43 : x
  2. Step 2: Convert to fraction form
    13,155.36/18,153.93 = 7,847.43/x
  3. Step 3: Cross multiply
    13,155.36x = 18,153.93 × 7,847.43
  4. Step 4: Simplify right side
    13,155.36x = 142,461,694.90
  5. Step 5: Solve for x
    x = 142,461,694.90/13,155.36
  6. Step 6: Final answer
    x = 10,829.17

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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.