Home / 14,421.28-19,900.98-8,133.64

Finding the Fourth Proportional to 14,421.28, 19,900.98 and 8,133.64

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Solution

The fourth proportional to 14,421.28, 19,900.98 and 8,133.64 is: 11,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.28 : 19,900.98 = 8,133.64 : x
  2. Step 2: Convert to fraction form
    14,421.28/19,900.98 = 8,133.64/x
  3. Step 3: Cross multiply
    14,421.28x = 19,900.98 × 8,133.64
  4. Step 4: Simplify right side
    14,421.28x = 161,867,406.97
  5. Step 5: Solve for x
    x = 161,867,406.97/14,421.28
  6. Step 6: Final answer
    x = 11,224.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.