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Finding the Fourth Proportional to 18,302.99, 25,239.26 and 15,659.15

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Solution

The fourth proportional to 18,302.99, 25,239.26 and 15,659.15 is: 21,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.99 : 25,239.26 = 15,659.15 : x
  2. Step 2: Convert to fraction form
    18,302.99/25,239.26 = 15,659.15/x
  3. Step 3: Cross multiply
    18,302.99x = 25,239.26 × 15,659.15
  4. Step 4: Simplify right side
    18,302.99x = 395,225,271.18
  5. Step 5: Solve for x
    x = 395,225,271.18/18,302.99
  6. Step 6: Final answer
    x = 21,593.49

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Half 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.