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Finding the Fourth Proportional to 13,153.77, 18,152.64 and 7,847.87

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Solution

The fourth proportional to 13,153.77, 18,152.64 and 7,847.87 is: 10,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.77 : 18,152.64 = 7,847.87 : x
  2. Step 2: Convert to fraction form
    13,153.77/18,152.64 = 7,847.87/x
  3. Step 3: Cross multiply
    13,153.77x = 18,152.64 × 7,847.87
  4. Step 4: Simplify right side
    13,153.77x = 142,459,468.11
  5. Step 5: Solve for x
    x = 142,459,468.11/13,153.77
  6. Step 6: Final answer
    x = 10,830.31

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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.