Home / 18,318.48-25,279.72-9,935.12

Finding the Fourth Proportional to 18,318.48, 25,279.72 and 9,935.12

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Solution

The fourth proportional to 18,318.48, 25,279.72 and 9,935.12 is: 13,710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.48 : 25,279.72 = 9,935.12 : x
  2. Step 2: Convert to fraction form
    18,318.48/25,279.72 = 9,935.12/x
  3. Step 3: Cross multiply
    18,318.48x = 25,279.72 × 9,935.12
  4. Step 4: Simplify right side
    18,318.48x = 251,157,051.77
  5. Step 5: Solve for x
    x = 251,157,051.77/18,318.48
  6. Step 6: Final answer
    x = 13,710.58

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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.