Home / 13,930.13-19,223.58-7,642.64

Finding the Fourth Proportional to 13,930.13, 19,223.58 and 7,642.64

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Solution

The fourth proportional to 13,930.13, 19,223.58 and 7,642.64 is: 10,546.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.13 : 19,223.58 = 7,642.64 : x
  2. Step 2: Convert to fraction form
    13,930.13/19,223.58 = 7,642.64/x
  3. Step 3: Cross multiply
    13,930.13x = 19,223.58 × 7,642.64
  4. Step 4: Simplify right side
    13,930.13x = 146,918,901.45
  5. Step 5: Solve for x
    x = 146,918,901.45/13,930.13
  6. Step 6: Final answer
    x = 10,546.84

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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.