Home / 13,140.24-18,133.08-7,832.30

Finding the Fourth Proportional to 13,140.24, 18,133.08 and 7,832.30

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Solution

The fourth proportional to 13,140.24, 18,133.08 and 7,832.30 is: 10,808.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.24 : 18,133.08 = 7,832.30 : x
  2. Step 2: Convert to fraction form
    13,140.24/18,133.08 = 7,832.30/x
  3. Step 3: Cross multiply
    13,140.24x = 18,133.08 × 7,832.30
  4. Step 4: Simplify right side
    13,140.24x = 142,023,722.48
  5. Step 5: Solve for x
    x = 142,023,722.48/13,140.24
  6. Step 6: Final answer
    x = 10,808.31

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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.