Home / 13,331.21-19,992.20-7,417.08

Finding the Fourth Proportional to 13,331.21, 19,992.20 and 7,417.08

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Solution

The fourth proportional to 13,331.21, 19,992.20 and 7,417.08 is: 11,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.21 : 19,992.20 = 7,417.08 : x
  2. Step 2: Convert to fraction form
    13,331.21/19,992.20 = 7,417.08/x
  3. Step 3: Cross multiply
    13,331.21x = 19,992.20 × 7,417.08
  4. Step 4: Simplify right side
    13,331.21x = 148,283,709.69
  5. Step 5: Solve for x
    x = 148,283,709.69/13,331.21
  6. Step 6: Final answer
    x = 11,123.05

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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.