Home / 30,173.70-45,242.37-13,530.72

Finding the Fourth Proportional to 30,173.70, 45,242.37 and 13,530.72

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Solution

The fourth proportional to 30,173.70, 45,242.37 and 13,530.72 is: 20,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,173.70 : 45,242.37 = 13,530.72 : x
  2. Step 2: Convert to fraction form
    30,173.70/45,242.37 = 13,530.72/x
  3. Step 3: Cross multiply
    30,173.70x = 45,242.37 × 13,530.72
  4. Step 4: Simplify right side
    30,173.70x = 612,161,840.61
  5. Step 5: Solve for x
    x = 612,161,840.61/30,173.70
  6. Step 6: Final answer
    x = 20,287.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.