Home / 17,688.78-26,517.69-7,152.30

Finding the Fourth Proportional to 17,688.78, 26,517.69 and 7,152.30

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Solution

The fourth proportional to 17,688.78, 26,517.69 and 7,152.30 is: 10,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,688.78 : 26,517.69 = 7,152.30 : x
  2. Step 2: Convert to fraction form
    17,688.78/26,517.69 = 7,152.30/x
  3. Step 3: Cross multiply
    17,688.78x = 26,517.69 × 7,152.30
  4. Step 4: Simplify right side
    17,688.78x = 189,662,474.19
  5. Step 5: Solve for x
    x = 189,662,474.19/17,688.78
  6. Step 6: Final answer
    x = 10,722.19

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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.