Home / 13,504.81-18,631.42-8,460.25

Finding the Fourth Proportional to 13,504.81, 18,631.42 and 8,460.25

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Solution

The fourth proportional to 13,504.81, 18,631.42 and 8,460.25 is: 11,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.81 : 18,631.42 = 8,460.25 : x
  2. Step 2: Convert to fraction form
    13,504.81/18,631.42 = 8,460.25/x
  3. Step 3: Cross multiply
    13,504.81x = 18,631.42 × 8,460.25
  4. Step 4: Simplify right side
    13,504.81x = 157,626,471.06
  5. Step 5: Solve for x
    x = 157,626,471.06/13,504.81
  6. Step 6: Final answer
    x = 11,671.88

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Double scale
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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.