Home / 13,749.07-20,618.47-5,426.32

Finding the Fourth Proportional to 13,749.07, 20,618.47 and 5,426.32

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Solution

The fourth proportional to 13,749.07, 20,618.47 and 5,426.32 is: 8,137.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.07 : 20,618.47 = 5,426.32 : x
  2. Step 2: Convert to fraction form
    13,749.07/20,618.47 = 5,426.32/x
  3. Step 3: Cross multiply
    13,749.07x = 20,618.47 × 5,426.32
  4. Step 4: Simplify right side
    13,749.07x = 111,882,416.13
  5. Step 5: Solve for x
    x = 111,882,416.13/13,749.07
  6. Step 6: Final answer
    x = 8,137.45

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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.