Home / 13,421.01-20,127.47-5,628.09

Finding the Fourth Proportional to 13,421.01, 20,127.47 and 5,628.09

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Solution

The fourth proportional to 13,421.01, 20,127.47 and 5,628.09 is: 8,440.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.01 : 20,127.47 = 5,628.09 : x
  2. Step 2: Convert to fraction form
    13,421.01/20,127.47 = 5,628.09/x
  3. Step 3: Cross multiply
    13,421.01x = 20,127.47 × 5,628.09
  4. Step 4: Simplify right side
    13,421.01x = 113,279,184.49
  5. Step 5: Solve for x
    x = 113,279,184.49/13,421.01
  6. Step 6: Final answer
    x = 8,440.44

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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.