Home / 18,215.19-25,136.72-10,257.51

Finding the Fourth Proportional to 18,215.19, 25,136.72 and 10,257.51

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Solution

The fourth proportional to 18,215.19, 25,136.72 and 10,257.51 is: 14,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.19 : 25,136.72 = 10,257.51 : x
  2. Step 2: Convert to fraction form
    18,215.19/25,136.72 = 10,257.51/x
  3. Step 3: Cross multiply
    18,215.19x = 25,136.72 × 10,257.51
  4. Step 4: Simplify right side
    18,215.19x = 257,840,105.48
  5. Step 5: Solve for x
    x = 257,840,105.48/18,215.19
  6. Step 6: Final answer
    x = 14,155.22

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Half scale
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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.