Home / 13,459.14-18,580.90-9,438.31

Finding the Fourth Proportional to 13,459.14, 18,580.90 and 9,438.31

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Solution

The fourth proportional to 13,459.14, 18,580.90 and 9,438.31 is: 13,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.14 : 18,580.90 = 9,438.31 : x
  2. Step 2: Convert to fraction form
    13,459.14/18,580.90 = 9,438.31/x
  3. Step 3: Cross multiply
    13,459.14x = 18,580.90 × 9,438.31
  4. Step 4: Simplify right side
    13,459.14x = 175,372,292.11
  5. Step 5: Solve for x
    x = 175,372,292.11/13,459.14
  6. Step 6: Final answer
    x = 13,029.97

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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.