Home / 13,387.03-18,473.08-7,418.58

Finding the Fourth Proportional to 13,387.03, 18,473.08 and 7,418.58

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Solution

The fourth proportional to 13,387.03, 18,473.08 and 7,418.58 is: 10,237.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.03 : 18,473.08 = 7,418.58 : x
  2. Step 2: Convert to fraction form
    13,387.03/18,473.08 = 7,418.58/x
  3. Step 3: Cross multiply
    13,387.03x = 18,473.08 × 7,418.58
  4. Step 4: Simplify right side
    13,387.03x = 137,044,021.83
  5. Step 5: Solve for x
    x = 137,044,021.83/13,387.03
  6. Step 6: Final answer
    x = 10,237.07

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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.