Home / 13,173.24-18,178.99-7,430.28

Finding the Fourth Proportional to 13,173.24, 18,178.99 and 7,430.28

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Solution

The fourth proportional to 13,173.24, 18,178.99 and 7,430.28 is: 10,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.24 : 18,178.99 = 7,430.28 : x
  2. Step 2: Convert to fraction form
    13,173.24/18,178.99 = 7,430.28/x
  3. Step 3: Cross multiply
    13,173.24x = 18,178.99 × 7,430.28
  4. Step 4: Simplify right side
    13,173.24x = 135,074,985.82
  5. Step 5: Solve for x
    x = 135,074,985.82/13,173.24
  6. Step 6: Final answer
    x = 10,253.74

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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.