Home / 13,140.24-18,140.22-10,149.36

Finding the Fourth Proportional to 13,140.24, 18,140.22 and 10,149.36

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Solution

The fourth proportional to 13,140.24, 18,140.22 and 10,149.36 is: 14,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.24 : 18,140.22 = 10,149.36 : x
  2. Step 2: Convert to fraction form
    13,140.24/18,140.22 = 10,149.36/x
  3. Step 3: Cross multiply
    13,140.24x = 18,140.22 × 10,149.36
  4. Step 4: Simplify right side
    13,140.24x = 184,111,623.26
  5. Step 5: Solve for x
    x = 184,111,623.26/13,140.24
  6. Step 6: Final answer
    x = 14,011.28

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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.