Home / 13,398.63-18,491.03-7,430.85

Finding the Fourth Proportional to 13,398.63, 18,491.03 and 7,430.85

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Solution

The fourth proportional to 13,398.63, 18,491.03 and 7,430.85 is: 10,255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.63 : 18,491.03 = 7,430.85 : x
  2. Step 2: Convert to fraction form
    13,398.63/18,491.03 = 7,430.85/x
  3. Step 3: Cross multiply
    13,398.63x = 18,491.03 × 7,430.85
  4. Step 4: Simplify right side
    13,398.63x = 137,404,033.12
  5. Step 5: Solve for x
    x = 137,404,033.12/13,398.63
  6. Step 6: Final answer
    x = 10,255.08

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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.