Home / 18,840.79-25,999.81-10,456.75

Finding the Fourth Proportional to 18,840.79, 25,999.81 and 10,456.75

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Solution

The fourth proportional to 18,840.79, 25,999.81 and 10,456.75 is: 14,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.79 : 25,999.81 = 10,456.75 : x
  2. Step 2: Convert to fraction form
    18,840.79/25,999.81 = 10,456.75/x
  3. Step 3: Cross multiply
    18,840.79x = 25,999.81 × 10,456.75
  4. Step 4: Simplify right side
    18,840.79x = 271,873,513.22
  5. Step 5: Solve for x
    x = 271,873,513.22/18,840.79
  6. Step 6: Final answer
    x = 14,430.05

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Half scale
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Double scale
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Similar ratio
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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.