Home / 13,399.07-18,489.48-7,430.63

Finding the Fourth Proportional to 13,399.07, 18,489.48 and 7,430.63

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Solution

The fourth proportional to 13,399.07, 18,489.48 and 7,430.63 is: 10,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.07 : 18,489.48 = 7,430.63 : x
  2. Step 2: Convert to fraction form
    13,399.07/18,489.48 = 7,430.63/x
  3. Step 3: Cross multiply
    13,399.07x = 18,489.48 × 7,430.63
  4. Step 4: Simplify right side
    13,399.07x = 137,388,484.77
  5. Step 5: Solve for x
    x = 137,388,484.77/13,399.07
  6. Step 6: Final answer
    x = 10,253.58

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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.