Home / 13,270.74-18,320.67-10,279.86

Finding the Fourth Proportional to 13,270.74, 18,320.67 and 10,279.86

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Solution

The fourth proportional to 13,270.74, 18,320.67 and 10,279.86 is: 14,191.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.74 : 18,320.67 = 10,279.86 : x
  2. Step 2: Convert to fraction form
    13,270.74/18,320.67 = 10,279.86/x
  3. Step 3: Cross multiply
    13,270.74x = 18,320.67 × 10,279.86
  4. Step 4: Simplify right side
    13,270.74x = 188,333,922.71
  5. Step 5: Solve for x
    x = 188,333,922.71/13,270.74
  6. Step 6: Final answer
    x = 14,191.67

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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.