Home / 43,200.45-64,802.70-13,620.57

Finding the Fourth Proportional to 43,200.45, 64,802.70 and 13,620.57

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Solution

The fourth proportional to 43,200.45, 64,802.70 and 13,620.57 is: 20,431.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,200.45 : 64,802.70 = 13,620.57 : x
  2. Step 2: Convert to fraction form
    43,200.45/64,802.70 = 13,620.57/x
  3. Step 3: Cross multiply
    43,200.45x = 64,802.70 × 13,620.57
  4. Step 4: Simplify right side
    43,200.45x = 882,649,468.53
  5. Step 5: Solve for x
    x = 882,649,468.53/43,200.45
  6. Step 6: Final answer
    x = 20,431.49

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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.