Home / 13,133.60-18,131.08-8,907.02

Finding the Fourth Proportional to 13,133.60, 18,131.08 and 8,907.02

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Solution

The fourth proportional to 13,133.60, 18,131.08 and 8,907.02 is: 12,296.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.60 : 18,131.08 = 8,907.02 : x
  2. Step 2: Convert to fraction form
    13,133.60/18,131.08 = 8,907.02/x
  3. Step 3: Cross multiply
    13,133.60x = 18,131.08 × 8,907.02
  4. Step 4: Simplify right side
    13,133.60x = 161,493,892.18
  5. Step 5: Solve for x
    x = 161,493,892.18/13,133.60
  6. Step 6: Final answer
    x = 12,296.24

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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.