Home / 13,913.51-20,859.47-7,247.21

Finding the Fourth Proportional to 13,913.51, 20,859.47 and 7,247.21

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Solution

The fourth proportional to 13,913.51, 20,859.47 and 7,247.21 is: 10,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.51 : 20,859.47 = 7,247.21 : x
  2. Step 2: Convert to fraction form
    13,913.51/20,859.47 = 7,247.21/x
  3. Step 3: Cross multiply
    13,913.51x = 20,859.47 × 7,247.21
  4. Step 4: Simplify right side
    13,913.51x = 151,172,923.34
  5. Step 5: Solve for x
    x = 151,172,923.34/13,913.51
  6. Step 6: Final answer
    x = 10,865.19

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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.