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Finding the Fourth Proportional to 17,080.40, 25,621.80 and 9,688.40

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Solution

The fourth proportional to 17,080.40, 25,621.80 and 9,688.40 is: 14,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,080.40 : 25,621.80 = 9,688.40 : x
  2. Step 2: Convert to fraction form
    17,080.40/25,621.80 = 9,688.40/x
  3. Step 3: Cross multiply
    17,080.40x = 25,621.80 × 9,688.40
  4. Step 4: Simplify right side
    17,080.40x = 248,234,247.12
  5. Step 5: Solve for x
    x = 248,234,247.12/17,080.40
  6. Step 6: Final answer
    x = 14,533.28

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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.