Home / 13,653.04-18,840.72-8,348.08

Finding the Fourth Proportional to 13,653.04, 18,840.72 and 8,348.08

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Solution

The fourth proportional to 13,653.04, 18,840.72 and 8,348.08 is: 11,520.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.04 : 18,840.72 = 8,348.08 : x
  2. Step 2: Convert to fraction form
    13,653.04/18,840.72 = 8,348.08/x
  3. Step 3: Cross multiply
    13,653.04x = 18,840.72 × 8,348.08
  4. Step 4: Simplify right side
    13,653.04x = 157,283,837.82
  5. Step 5: Solve for x
    x = 157,283,837.82/13,653.04
  6. Step 6: Final answer
    x = 11,520.06

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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.