Home / 13,038.90-18,004.91-12,374.56

Finding the Fourth Proportional to 13,038.90, 18,004.91 and 12,374.56

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Solution

The fourth proportional to 13,038.90, 18,004.91 and 12,374.56 is: 17,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.90 : 18,004.91 = 12,374.56 : x
  2. Step 2: Convert to fraction form
    13,038.90/18,004.91 = 12,374.56/x
  3. Step 3: Cross multiply
    13,038.90x = 18,004.91 × 12,374.56
  4. Step 4: Simplify right side
    13,038.90x = 222,802,839.09
  5. Step 5: Solve for x
    x = 222,802,839.09/13,038.90
  6. Step 6: Final answer
    x = 17,087.55

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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.