Home / 13,920.16-19,209.60-7,632.60

Finding the Fourth Proportional to 13,920.16, 19,209.60 and 7,632.60

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Solution

The fourth proportional to 13,920.16, 19,209.60 and 7,632.60 is: 10,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.16 : 19,209.60 = 7,632.60 : x
  2. Step 2: Convert to fraction form
    13,920.16/19,209.60 = 7,632.60/x
  3. Step 3: Cross multiply
    13,920.16x = 19,209.60 × 7,632.60
  4. Step 4: Simplify right side
    13,920.16x = 146,619,192.96
  5. Step 5: Solve for x
    x = 146,619,192.96/13,920.16
  6. Step 6: Final answer
    x = 10,532.87

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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.