Home / 13,187.65-18,207.45-11,768.91

Finding the Fourth Proportional to 13,187.65, 18,207.45 and 11,768.91

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Solution

The fourth proportional to 13,187.65, 18,207.45 and 11,768.91 is: 16,248.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.65 : 18,207.45 = 11,768.91 : x
  2. Step 2: Convert to fraction form
    13,187.65/18,207.45 = 11,768.91/x
  3. Step 3: Cross multiply
    13,187.65x = 18,207.45 × 11,768.91
  4. Step 4: Simplify right side
    13,187.65x = 214,281,749.34
  5. Step 5: Solve for x
    x = 214,281,749.34/13,187.65
  6. Step 6: Final answer
    x = 16,248.67

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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.