Home / 13,349.31-18,419.45-7,684.30

Finding the Fourth Proportional to 13,349.31, 18,419.45 and 7,684.30

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Solution

The fourth proportional to 13,349.31, 18,419.45 and 7,684.30 is: 10,602.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.31 : 18,419.45 = 7,684.30 : x
  2. Step 2: Convert to fraction form
    13,349.31/18,419.45 = 7,684.30/x
  3. Step 3: Cross multiply
    13,349.31x = 18,419.45 × 7,684.30
  4. Step 4: Simplify right side
    13,349.31x = 141,540,495.16
  5. Step 5: Solve for x
    x = 141,540,495.16/13,349.31
  6. Step 6: Final answer
    x = 10,602.83

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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.