Home / 13,349.40-18,421.99-7,381.52

Finding the Fourth Proportional to 13,349.40, 18,421.99 and 7,381.52

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Solution

The fourth proportional to 13,349.40, 18,421.99 and 7,381.52 is: 10,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.40 : 18,421.99 = 7,381.52 : x
  2. Step 2: Convert to fraction form
    13,349.40/18,421.99 = 7,381.52/x
  3. Step 3: Cross multiply
    13,349.40x = 18,421.99 × 7,381.52
  4. Step 4: Simplify right side
    13,349.40x = 135,982,287.62
  5. Step 5: Solve for x
    x = 135,982,287.62/13,349.40
  6. Step 6: Final answer
    x = 10,186.40

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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.