Home / 13,742.78-18,964.51-7,455.02

Finding the Fourth Proportional to 13,742.78, 18,964.51 and 7,455.02

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Solution

The fourth proportional to 13,742.78, 18,964.51 and 7,455.02 is: 10,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.78 : 18,964.51 = 7,455.02 : x
  2. Step 2: Convert to fraction form
    13,742.78/18,964.51 = 7,455.02/x
  3. Step 3: Cross multiply
    13,742.78x = 18,964.51 × 7,455.02
  4. Step 4: Simplify right side
    13,742.78x = 141,380,801.34
  5. Step 5: Solve for x
    x = 141,380,801.34/13,742.78
  6. Step 6: Final answer
    x = 10,287.64

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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.