Home / 13,210.46-18,230.64-7,905.50

Finding the Fourth Proportional to 13,210.46, 18,230.64 and 7,905.50

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Solution

The fourth proportional to 13,210.46, 18,230.64 and 7,905.50 is: 10,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.46 : 18,230.64 = 7,905.50 : x
  2. Step 2: Convert to fraction form
    13,210.46/18,230.64 = 7,905.50/x
  3. Step 3: Cross multiply
    13,210.46x = 18,230.64 × 7,905.50
  4. Step 4: Simplify right side
    13,210.46x = 144,122,324.52
  5. Step 5: Solve for x
    x = 144,122,324.52/13,210.46
  6. Step 6: Final answer
    x = 10,909.71

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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.