Home / 17,119.28-25,680.36-5,430.08

Finding the Fourth Proportional to 17,119.28, 25,680.36 and 5,430.08

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Solution

The fourth proportional to 17,119.28, 25,680.36 and 5,430.08 is: 8,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,119.28 : 25,680.36 = 5,430.08 : x
  2. Step 2: Convert to fraction form
    17,119.28/25,680.36 = 5,430.08/x
  3. Step 3: Cross multiply
    17,119.28x = 25,680.36 × 5,430.08
  4. Step 4: Simplify right side
    17,119.28x = 139,446,409.23
  5. Step 5: Solve for x
    x = 139,446,409.23/17,119.28
  6. Step 6: Final answer
    x = 8,145.58

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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.