Home / 13,158.45-18,165.06-10,319.40

Finding the Fourth Proportional to 13,158.45, 18,165.06 and 10,319.40

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Solution

The fourth proportional to 13,158.45, 18,165.06 and 10,319.40 is: 14,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.45 : 18,165.06 = 10,319.40 : x
  2. Step 2: Convert to fraction form
    13,158.45/18,165.06 = 10,319.40/x
  3. Step 3: Cross multiply
    13,158.45x = 18,165.06 × 10,319.40
  4. Step 4: Simplify right side
    13,158.45x = 187,452,520.16
  5. Step 5: Solve for x
    x = 187,452,520.16/13,158.45
  6. Step 6: Final answer
    x = 14,245.79

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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.