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Finding the Fourth Proportional to 17,152.40, 25,728.60 and 13,005.20

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Solution

The fourth proportional to 17,152.40, 25,728.60 and 13,005.20 is: 19,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,152.40 : 25,728.60 = 13,005.20 : x
  2. Step 2: Convert to fraction form
    17,152.40/25,728.60 = 13,005.20/x
  3. Step 3: Cross multiply
    17,152.40x = 25,728.60 × 13,005.20
  4. Step 4: Simplify right side
    17,152.40x = 334,605,588.72
  5. Step 5: Solve for x
    x = 334,605,588.72/17,152.40
  6. Step 6: Final answer
    x = 19,507.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.