Home / 13,356.98-18,431.48-7,387.16

Finding the Fourth Proportional to 13,356.98, 18,431.48 and 7,387.16

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Solution

The fourth proportional to 13,356.98, 18,431.48 and 7,387.16 is: 10,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.98 : 18,431.48 = 7,387.16 : x
  2. Step 2: Convert to fraction form
    13,356.98/18,431.48 = 7,387.16/x
  3. Step 3: Cross multiply
    13,356.98x = 18,431.48 × 7,387.16
  4. Step 4: Simplify right side
    13,356.98x = 136,156,291.80
  5. Step 5: Solve for x
    x = 136,156,291.80/13,356.98
  6. Step 6: Final answer
    x = 10,193.64

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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.